Assignee
SUPRA PROD INC
US·30 granted patents·3,197 citations·filing 1977–1997
Top patents by PatentIndex Score
30 records- 0197US5090222AElectronic lock box and retention mechanism for use thereinSUPRA PROD INC·Filed 1991·Granted Feb 25, 1992·113 cites·12 claims
- 0295US4831851ACombination/electronic lock systemSUPRA PROD INC·Filed 1986·Granted May 23, 1989·80 cites·15 claims
- 0394US5768921AKey box deviceSUPRA PROD INC·Filed 1997·Granted Jun 23, 1998·86 cites·9 claims
- 0494US4578969ATumbler lock having peripheral keySUPRA PROD INC·Filed 1984·Granted Apr 1, 1986·68 cites·10 claims
- 0592US4914732AElectronic key with interactive graphic user interfaceSUPRA PROD INC·Filed 1989·Granted Apr 3, 1990·267 cites·10 claims
- 0692US4727368AElectronic real estate lockbox systemSUPRA PROD INC·Filed 1986·Granted Feb 23, 1988·266 cites·2 claims
- 0791US5550529AAccess control systemSUPRA PROD INC·Filed 1995·Granted Aug 27, 1996·84 cites·14 claims
- 0889US4936894APushbutton lockSUPRA PROD INC·Filed 1989·Granted Jun 26, 1990·62 cites·2 claims
- 0986US5602536AData synchronization method for use with portable, microprocessor-based deviceSUPRA PROD INC·Filed 1995·Granted Feb 11, 1997·215 cites·4 claims
- 1086US4766746AElectronic real estate lockbox systemSUPRA PROD INC·Filed 1987·Granted Aug 30, 1988·195 cites·37 claims
- 1185US4112717AKey boxSUPRA PROD INC·Filed 1977·Granted Sep 12, 1978·52 cites·5 claims
- 1283US4407147APeripheral key tumbler lockSUPRA PROD INC·Filed 1980·Granted Oct 4, 1983·34 cites·14 claims
- 1382US5705991AAccess control device featuring key ordering or key simultaneitySUPRA PROD INC·Filed 1995·Granted Jan 6, 1998·176 cites·11 claims
- 1482US5475375AElectronic access control systemsSUPRA PROD INC·Filed 1993·Granted Dec 12, 1995·177 cites·18 claims
- 1582US4988987AKeysafe system with timer/calendar featuresSUPRA PROD INC·Filed 1989·Granted Jan 29, 1991·143 cites·16 claims
- 1680US5280518AElectronic security systemSUPRA PROD INC·Filed 1991·Granted Jan 18, 1994·203 cites·15 claims
- 1778US4916443AMethod and apparatus for compiling data relating to operation of an electronic lock systemSUPRA PROD INC·Filed 1988·Granted Apr 10, 1990·116 cites·11 claims
- 1877US5654696AMethod for transferring auxillary data using components of a secure entry systemSUPRA PROD INC·Filed 1995·Granted Aug 5, 1997·142 cites·11 claims
- 1977US4887292AElectronic lock system with improved data disseminationSUPRA PROD INC·Filed 1989·Granted Dec 12, 1989·108 cites·11 claims
- 2076US5794465AKey lock box assemblySUPRA PROD INC·Filed 1995·Granted Aug 18, 1998·50 cites·13 claims
- 2176US5046084AElectronic real estate lockbox system with improved reporting capabilitySUPRA PROD INC·Filed 1989·Granted Sep 3, 1991·133 cites·15 claims
- 2273US5245652ASecure entry system with acoustically coupled telephone interfaceSUPRA PROD INC·Filed 1991·Granted Sep 14, 1993·119 cites·3 claims
- 2373US4947163AElectronic security system with configurable keySUPRA PROD INC·Filed 1989·Granted Aug 7, 1990·94 cites·9 claims
- 2470US4895036AKeySUPRA PROD INC·Filed 1988·Granted Jan 23, 1990·29 cites·2 claims
- 2566US4325239AKey safe having improved bar locking systemSUPRA PROD INC·Filed 1980·Granted Apr 20, 1982·22 cites·8 claims
- 2665US4929880AElectronic lock system with battery conservation featuresSUPRA PROD INC·Filed 1988·Granted May 29, 1990·65 cites·14 claims
- 2762US4626007ATilt bolt lockSUPRA PROD INC·Filed 1984·Granted Dec 2, 1986·21 cites·5 claims
- 2857USD399408SKey boxSUPRA PROD INC·Filed 1997·Granted Oct 13, 1998·9 cites·1 claims
- 2957US4896246AElectronic lock with energy conservation featuresSUPRA PROD INC·Filed 1989·Granted Jan 23, 1990·44 cites·4 claims
- 3052US5267460ACombination lockSUPRA PROD INC·Filed 1991·Granted Dec 7, 1993·24 cites·13 claims
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