with a device carried on the wing for frictional or like engagement with a fixed flat surface, e.g. retractable feet

Full Title

Devices for holding wings open; Devices for limiting opening of wings or for holding wings open by a movable member extending between frame and wing; Braking devices, stops or buffers, combined therewith > by mechanical means > with a device carried on the wing for frictional or like engagement with a fixed flat surface, e.g. retractable feet

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