Inventor · disambiguated record
Walter E. Surko, Jr.
Also filed as: SURKO JR WALTER E · SURKO JR WALTER EDWARD · SURKO WALTER E JR
12 granted patents·520 citations·filing 1974–1998
94Inventor score
Top patents by PatentIndex Score
12 records- 0195US4920773ADoor lock having disengages outer lever handle when in the locked condition and means to bias the handle toward horizontal positionYALE SECURITY INC·Filed 1988·Granted May 1, 1990·91 cites·14 claims
- 0292US4638651ALock cylinder having two sets of tumblers and key thereforYALE SECURITY INC·Filed 1985·Granted Jan 27, 1987·75 cites·15 claims
- 0392US4236396ARetrofit lockEMHART IND·Filed 1978·Granted Dec 2, 1980·56 cites·18 claims
- 0488US4103526APin tumbler lockEMHART IND·Filed 1976·Granted Aug 1, 1978·44 cites·35 claims
- 0581US3935614AElectromechanical door holder-closerEMHART CORP·Filed 1974·Granted Feb 3, 1976·47 cites·50 claims
- 0677US4419786ADoor closer assemblyEMHART IND·Filed 1981·Granted Dec 13, 1983·38 cites·27 claims
- 0776US4208894ACam lockEMHART IND·Filed 1978·Granted Jun 24, 1980·32 cites·10 claims
- 0874US5605362AExit device having a deadbolt as its securing memberYALE SECURITY INC·Filed 1995·Granted Feb 25, 1997·35 cites·38 claims
- 0974US4665583ADoor closer piston assembly having separate head portionsEMHART IND·Filed 1986·Granted May 19, 1987·42 cites·16 claims
- 1061US6779819B2Exit device having press bar-operated elongated securing memberYALE SECURITY INC·Filed 1998·Granted Aug 24, 2004·21 cites·42 claims
- 1157US4976480ACylindrical lockset having quick mount means accommodating various thickness of doorsYALE SECURITY INC·Filed 1990·Granted Dec 11, 1990·19 cites·9 claims
- 1250US5490697AAccess control assemblyINT SECURITY PROD INC·Filed 1994·Granted Feb 13, 1996·20 cites·20 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →