Inventor · disambiguated record
Walter R. Evans
Also filed as: EVANS WALTER · EVANS WALTER R · EVANS WALTER REED · MILLER HARRY C
17 granted patents·1 pending application·551 citations·filing 1979–2001
95Inventor score
Top patents by PatentIndex Score
18 records- 0196US4961330AHigh security panic exit systemSARGENT & GREENLEAF·Filed 1990·Granted Oct 9, 1990·119 cites·29 claims
- 0289US5893283ASolenoid controlled bolt control for an electronic lockMAS HAMILTON GROUP·Filed 1997·Granted Apr 13, 1999·73 cites·18 claims
- 0382US4776187AChangeable key cylinder exposed shackle padlockSARGENT & GREENLEAF·Filed 1987·Granted Oct 11, 1988·49 cites·15 claims
- 0477US4241594ASlide cover type changeable key plug padlockSARGENT & GREENLEAF·Filed 1979·Granted Dec 30, 1980·31 cites·18 claims
- 0574US5881589AGear driven bolt withdrawal for an electronic combination lockMAS HAMILTON GROUP·Filed 1997·Granted Mar 16, 1999·41 cites·5 claims
- 0674USD388308SElectronic combination lock housingMAS HAMILTON GROUP·Filed 1996·Granted Dec 30, 1997·19 cites·1 claims
- 0767US4763496AHigh security changeable key cylinder type shackle padlockSARGENT & GREENLEAF·Filed 1987·Granted Aug 16, 1988·31 cites·20 claims
- 0867US4359886AKey lock cylinder for possibly contaminated environmentsSARGENT & GREENLEAF·Filed 1981·Granted Nov 23, 1982·28 cites·27 claims
- 0964US6094953AElectrically controlled slidebolt lockMAS HAMILTON GROUP INC·Filed 1998·Granted Aug 1, 2000·31 cites·15 claims
- 1063US6151935ADeadbolt combination lock system with automatic locking spring boltMAS HAMILTON GROUP·Filed 1997·Granted Nov 28, 2000·22 cites·22 claims
- 1162US4404823AView limiting dial and ring structure for combination locks and the likeSARGENT & GREENLEAF·Filed 1980·Granted Sep 20, 1983·22 cites·17 claims
- 1258US5632170ACombination lock preventing manipulation for unauthorized accessILCO UNICAN INC·Filed 1995·Granted May 27, 1997·19 cites·21 claims
- 1358US4462230AChangeable safe deposit lock with slidable clamped fencesSARGENT & GREENLEAF·Filed 1982·Granted Jul 31, 1984·20 cites·16 claims
- 1457US4651546AHigh security rotary disc, pin tumbler type cylinder lockSARGENT & GREENLEAF·Filed 1986·Granted Mar 24, 1987·16 cites·15 claims
- 1542US4643010ATwo movement time lockSARGENT & GREENLEAF·Filed 1985·Granted Feb 17, 1987·11 cites·17 claims
- 1641US4875351AElectronic time lockSARGENT & GREENLEAF·Filed 1988·Granted Oct 24, 1989·13 cites·16 claims
- 1741US2002124612A1Slide bolt lockMAS HAMILTON GROUP INC·Filed 2001·Application pending·0 cites
- 1839US4580424ASingle lever, double changeable safe deposit lockSARGENT & GREENLEAF·Filed 1983·Granted Apr 8, 1986·6 cites·12 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →