Inventor
SHERMAN JOHN W
US9 patents
⚠️ This page may combine multiple inventors who share the name “SHERMAN JOHN W”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
SUPRA PROD INC
6 patentsUS4914732AApr 3, 1990
Electronic key with interactive graphic user interface
SUPRA PROD INC267 citations97
US4766746AAug 30, 1988
Electronic real estate lockbox system
SUPRA PROD INC195 citations97
US5705991AJan 6, 1998
Access control device featuring key ordering or key simultaneity
SUPRA PROD INC176 citations96
US4947163AAug 7, 1990
Electronic security system with configurable key
SUPRA PROD INC94 citations93
US5280518AJan 18, 1994
Electronic security system
SUPRA PROD INC203 citations92
US4896246AJan 23, 1990
Electronic lock with energy conservation features
SUPRA PROD INC44 citations91