Inventor · disambiguated record
Bernard J. Wallis
Also filed as: WALLIS BERNARD J · WALLIS BERNARD JOSEPH
65 granted patents·1,312 citations·filing 1974–1997
99Inventor score
Top patents by PatentIndex Score
65 records- 0194US4326402AStock lifter for progressive diesWALLIS BERNARD J·Filed 1980·Granted Apr 27, 1982·53 cites·13 claims
- 0293US4558620APunch retainerWALLIS BERNARD J·Filed 1984·Granted Dec 17, 1985·47 cites·10 claims
- 0392US4174648APunch retainerWALLIS BERNARD J·Filed 1978·Granted Nov 20, 1979·40 cites·16 claims
- 0491US4032018AWorkpiece transfer mechanismWALLIS BERNARD J·Filed 1975·Granted Jun 28, 1977·37 cites·13 claims
- 0590US4342448AGas-operated cylinderWALLIS BERNARD J·Filed 1980·Granted Aug 3, 1982·55 cites·4 claims
- 0689US4753096AApparatus for controlling height of corrugations formed in a continuous length of strip stockWALLIS BERNARD J·Filed 1986·Granted Jun 28, 1988·35 cites·15 claims
- 0788US4590788ADie clampWALLIS BERNARD J·Filed 1984·Granted May 27, 1986·39 cites·15 claims
- 0887US4154434ABoot arrangement for piston-cylinder assemblyWALLIS BERNARD J·Filed 1977·Granted May 15, 1979·40 cites·7 claims
- 0986US4774865ADie stamping systemWALLIS BERNARD J·Filed 1987·Granted Oct 4, 1988·31 cites·8 claims
- 1084US4005763ALubricating means for gas-operated cylindersWALLIS BERNARD J·Filed 1975·Granted Feb 1, 1977·42 cites·30 claims
- 1183US4316399ACombined punch retainer and fluid actuated stripperWALLIS BERNARD J·Filed 1980·Granted Feb 23, 1982·29 cites·8 claims
- 1282US4741518ASelf contained gas spring interchangeable with coil springWALLIS BERNARD J·Filed 1986·Granted May 3, 1988·38 cites·14 claims
- 1382US4583722ANitrogen die cylinderWALLIS BERNARD J·Filed 1984·Granted Apr 22, 1986·27 cites·4 claims
- 1481US4507948AMethod and apparatus for cutting corrugated stripWALLIS BERNARD J·Filed 1983·Granted Apr 2, 1985·26 cites·16 claims
- 1581US3998600AHeat exchanger strip and method and apparatus for forming sameWALLIS BERNARD J·Filed 1975·Granted Dec 21, 1976·30 cites·24 claims
- 1680US5088698ASealing construction for a gas springWALLIS BERNARD J·Filed 1989·Granted Feb 18, 1992·25 cites·8 claims
- 1780US4602497ADie clamping arrangementWALLIS BERNARD J·Filed 1984·Granted Jul 29, 1986·21 cites·11 claims
- 1878US5271151AMethod of making a high pressure condenserWALLIS BERNARD J·Filed 1992·Granted Dec 21, 1993·37 cites·5 claims
- 1978US5197718ASelf-contained gas springs interchangeable with coil springsWALLIS BERNARD J·Filed 1990·Granted Mar 30, 1993·37 cites·13 claims
- 2075US4076103ALubricating means for gas-operated cylindersWALLIS BERNARD J·Filed 1976·Granted Feb 28, 1978·31 cites·10 claims
- 2174US5007817APress with die cushion gas monitorWALLIS BERNARD J·Filed 1990·Granted Apr 16, 1991·19 cites·11 claims
- 2274US4934230ADie stamping systemWALLIS BERNARD J·Filed 1988·Granted Jun 19, 1990·28 cites·7 claims
- 2372US4089203AWorkpiece transfer mechanismWALLIS BERNARD J·Filed 1976·Granted May 16, 1978·17 cites·15 claims
- 2472US4044859ALubricating means for gas-operated cylindersWALLIS BERNARD J·Filed 1976·Granted Aug 30, 1977·21 cites·15 claims
- 2569US4735303ATransfer apparatusWALLIS BERNARD J·Filed 1986·Granted Apr 5, 1988·22 cites·10 claims
- 2669US4595135AMethod and apparatus for forming heat exchanger tubesWALLIS BERNARD J·Filed 1984·Granted Jun 17, 1986·18 cites·11 claims
- 2769US4343228AHydraulic cylinder arrangementWALLIS BERNARD J·Filed 1980·Granted Aug 10, 1982·17 cites·3 claims
- 2868US5386975AGas die cylindersFiled 1993·Granted Feb 7, 1995·26 cites·1 claims
- 2967US5172892ASelf contained gas springWALLIS BERNARD J·Filed 1991·Granted Dec 22, 1992·25 cites·2 claims
- 3067US3947005AFluid spring assemblyWALLIS BERNARD J·Filed 1974·Granted Mar 30, 1976·18 cites·20 claims
- 3166US4292869AUnitary punch and die assemblyWALLIS BERNARD J·Filed 1980·Granted Oct 6, 1981·20 cites·18 claims
- 3265US4742997AGas spring with separate charging and pressure relief valvesWALLIS BERNARD J·Filed 1986·Granted May 10, 1988·21 cites·3 claims
- 3364US4953378AApparatus for cutting corrugated strip stock at variable lengthsWALLIS BERNARD J·Filed 1989·Granted Sep 4, 1990·15 cites·43 claims
- 3463US5314172AHigh pressure die cylinder and manifold systemWALLIS BERNARD J·Filed 1992·Granted May 24, 1994·22 cites·9 claims
- 3561US4529181AFluid die springWALLIS BERNARD J·Filed 1984·Granted Jul 16, 1985·18 cites·10 claims
- 3660US4377100APunch retainerWALLIS BERNARD J·Filed 1981·Granted Mar 22, 1983·16 cites·7 claims
- 3760US4339976APunch retainerWALLIS BERNARD J·Filed 1980·Granted Jul 20, 1982·13 cites·2 claims
- 3859US5193613AHeat exchanger header tube and method of makingWALLIS BERNARD J·Filed 1992·Granted Mar 16, 1993·19 cites·8 claims
- 3959US4838065ACorrugated fin forming apparatusWALLIS BERNARD J·Filed 1987·Granted Jun 13, 1989·13 cites·15 claims
- 4057US4741192ARolling metal ribbon stock into convoluted fin strip for use in heat exchangersWALLIS BERNARD J·Filed 1986·Granted May 3, 1988·12 cites·4 claims
- 4154US5557959AModular die transfer systemLIVERNOIS RES & DEV CO·Filed 1994·Granted Sep 24, 1996·12 cites·29 claims
- 4254US5318281ASelf contained gas spring and die cylinderWALLIS BERNARD J·Filed 1992·Granted Jun 7, 1994·17 cites·9 claims
- 4354US5243889ATube cut off machineWALLIS BERNARD J·Filed 1991·Granted Sep 14, 1993·13 cites·9 claims
- 4454US4311429AWorkpiece transfer mechanismWALLIS BERNARD J·Filed 1980·Granted Jan 19, 1982·12 cites·8 claims
- 4554US4262568ACut-off mechanism for corrugated stripWALLIS BERNARD J·Filed 1979·Granted Apr 21, 1981·9 cites·12 claims
- 4653US4939967ACut-off machineWALLIS BERNARD J·Filed 1989·Granted Jul 10, 1990·13 cites·32 claims
- 4753US4628796ANitrogen die cylinderWALLIS BERNARD J·Filed 1984·Granted Dec 16, 1986·10 cites·13 claims
- 4853US4462290ATube cut-off machineWALLIS BERNARD J·Filed 1982·Granted Jul 31, 1984·12 cites·3 claims
- 4952US5063801ACut-off machine and method for tubingWALLIS BERNARD J·Filed 1990·Granted Nov 12, 1991·14 cites·26 claims
- 5051US5007270AWeb handling apparatus for metal ribbon stockWALLIS BERNARD J·Filed 1989·Granted Apr 16, 1991·10 cites·4 claims
Showing the top 50 of 65 patent records by PatentIndex Score.
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