Assignee
DUFF NORTON CO
10 granted patents·236 citations·filing 1974–1987
Top patents by PatentIndex Score
10 records- 0188US4000664AMechanical actuatorDUFF NORTON CO·Filed 1975·Granted Jan 4, 1977·50 cites·8 claims
- 0285US4014467ADishwasher and couplingDUFF NORTON CO·Filed 1975·Granted Mar 29, 1977·63 cites·9 claims
- 0370US4392390AShielding apparatus for linear actuatorDUFF NORTON CO·Filed 1981·Granted Jul 12, 1983·21 cites·7 claims
- 0470USD252567SPendent hoist controlDUFF NORTON CO·Filed 1977·Granted Aug 7, 1979·16 cites·1 claims
- 0559US4691452AArticulable siphon tube assembly for dryer drumDUFF NORTON CO·Filed 1986·Granted Sep 8, 1987·23 cites·17 claims
- 0646US4477107ARotating joint with separated bearings and sealsDUFF NORTON CO·Filed 1981·Granted Oct 16, 1984·19 cites·6 claims
- 0745US4556832AControl valve apparatusDUFF NORTON CO·Filed 1984·Granted Dec 3, 1985·15 cites·18 claims
- 0842US3957144AContinuous roller brakeDUFF NORTON CO·Filed 1974·Granted May 18, 1976·12 cites·4 claims
- 0940US4500069AHydraulic directional control valveDUFF NORTON CO·Filed 1982·Granted Feb 19, 1985·10 cites·6 claims
- 1020US4735262ARotary steam jointDUFF NORTON CO·Filed 1987·Granted Apr 5, 1988·7 cites·31 claims
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