Burglarproof sash window

Details Burglarproof sash window Burglarproof sash window

1997-06-23

1999-01-26

Friedman, Carl D.

Static structures (e.g., buildings)

Composite prefabricated panel including adjunctive means

Sandwich or hollow with sheet-like facing members

526568, 49 61, 49501, E04C 254

Patent

active

058626450

ABSTRACT:
A sash window includes two sashes locked with a combination lock, each sash having a metal inner frame sandwiched in between two glass plates within a rectangular frame, the metal inner frame having intersected metal bars mounted on the inside that prohibit burglars from breaking in.

REFERENCES:
patent: 3555735 (1971-01-01), Weikert
patent: 4653797 (1987-03-01), Tran
patent: 4791762 (1988-12-01), Hwang
patent: 4972639 (1990-11-01), Woznick
patent: 5221363 (1993-06-01), Gillard
patent: 5226919 (1993-07-01), Milligan
patent: 5251417 (1993-10-01), Yates
patent: 5319879 (1994-06-01), Rozycki
patent: 5428924 (1995-07-01), Pifer
patent: 5575321 (1996-11-01), Currier

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