Ventilation stop for windows

Details Ventilation stop for windows Ventilation stop for windows

1978-07-13

1980-09-16

Moore, Richard E.

Closure fasteners

Wedges

292DIG9, E05C 304

Patent

active

042225965

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: 888039 (1908-05-01), Rosenberg
patent: 889261 (1908-06-01), Prouty
patent: 1559735 (1925-11-01), Bauml
patent: 1818043 (1931-08-01), Coady et al.
patent: 1950251 (1934-03-01), Kulefsky
patent: 1992683 (1935-02-01), Webb et al.
patent: 2415166 (1947-02-01), FitzGerald
patent: 2416127 (1947-02-01), Spivak
patent: 2555915 (1951-06-01), Christie
patent: 2931676 (1960-04-01), Wroughton
patent: 4103947 (1978-08-01), Delaney

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