METAL THREADED FASTENERS

APPLICATION TO THE HEAD OF SPECIAL HEDED AND EXTERNALLY THREADED FASTENERS WHICH HAVE AS A CHARACTERISTIC OF THE FASTENER A SELF-CONTAINED ALL-METAL LOCKING DEVICE

Birdcages; Animal-activated pet feeders; Automated pet appliances, namely, litter boxes; Automatic litter boxes for pets; Automatic pet feeders; Automatic pet waterers; Bird feeding tables; Cages for household pets; Litter boxes for pets; Litter trays for pets; Rings for identifying birds; Small animal feeders