with two sliding bars moved in opposite directions when fastening or unfastening

Full Title

Arrangement of simultaneously-actuated bolts or other securing devices at well-separated positions on the same wing > with two sliding bars moved in opposite directions when fastening or unfastening

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