Door Security Apparatus

A door security apparatus and method that is adapted to assist in retaining a pair of adjacent doors in a closed state, thereby to help protect against unauthorized opening of the doors by placing the doors into an open state. The door security apparatus includes a channeled extension beam having a...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	WARREN PHILIP H, JOHNSON ELMER M
Format:	Patent
Sprache:	eng
Schlagworte:	ACCESSORIES THEREFOR BOLTS OR FASTENING DEVICES FOR WINGS, SPECIALLY FOR DOORS ORWINDOWS FIXED CONSTRUCTIONS GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS HANDCUFFS KEYS LOCKS SAFES TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION TECHNICAL SUBJECTS COVERED BY FORMER USPC TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS WINDOW OR DOOR FITTINGS
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