Hinge security stud

Inclusion of tooth whitening oxidation chemistries into slow rel

Interior door security

Latch dead-bolting means

Lock for sliding doors

Locking apparatus for sliding windows and the like

Locking device for sliding windows and the like

Locking end actuating mechanism for railway hopper car doors

Locking pin assembly

Manhole cover lock

Pin release device for a wheelchair lift

Portable door lock

Preassembled fiber optic security seal

Safety locking means for lift arms of straddle carriers

Security device for dual doors

Security device for dual doors

Security device to prevent removal of sliding windows and doors

Security gate post

Security lock apparatus

Shell door locking device