Ventilation stop for windows

Details Ventilation stop for windows Ventilation stop for windows

1977-02-04

1978-08-01

Dorner, Kenneth J.

Closure fasteners

Bolts

Swinging

292342, 292DIG9, E05C 302

Patent

active

041039475

ABSTRACT:
A ventilation stop mounted on a side rail of the upper sash of a double-hung window, capable of being swung into and out of the path of the upper horizontal rail of the lower sash to permit only limited relative opening movement of the upper and lower sashes.

REFERENCES:
patent: 890009 (1908-06-01), Zander
patent: 1589231 (1926-06-01), Rumbold
patent: 1992683 (1935-02-01), Webb et al.
patent: 2415166 (1947-02-01), Fitzgerald

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