A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
The present invention is a door barricade having a pivoting locking arm which drops into a floor hole to lock a barricade in place.
The present invention is a door barricade having a pivoting locking arm which drops into a floor hole to lock a barricade in place.
DOOR BARRICADE
RICHMOND MATTHEW TODD (author)
2017-07-27
Patent
Electronic Resource
English
IPC:
E05C
Riegel oder Feststellvorrichtungen für Flügel, insbesondere für Türen oder Fenster
,
BOLTS OR FASTENING DEVICES FOR WINGS, SPECIALLY FOR DOORS OR WINDOWS