a fastening device for one wing being actuated or controlled by closing another wing

Full Title

Fastening devices specially adapted for two wings > for wings which abut when closed > a fastening device for one wing being actuated or controlled by closing another wing

Classification Context

Section:

FIXED CONSTRUCTIONS

Class:

LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES

Subclass:

BOLTS OR FASTENING DEVICES FOR WINGS, SPECIALLY FOR DOORS OR WINDOWS