Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Push bar exit device with alarm

Push bar exit device with alarm

US Patent 4631528 · Granted Dec 23, 1986

Estimated economic value: $2,941,000 ⓘ

Assignee

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Low cost garage door lock2013
Keypad escutcheon2008
Keypad escutcheon2008
Keypad escutcheon2007
Vertical door locking system2006
Retracting spindle for mortise lock2002
Free-wheeling lever handle lock mechanism2000
Motorized lock actuators1997
Cylindrical lockset1994
Cylindrical lockset1994
Cylinder lock1993
Cylindrical lock assembly1992