Grating

Details Grating Grating

1990-11-16

1992-12-01

Word, A. Hugo

Building units and construction elements

Architectural stock material

Panel, tile or applique or floor, wall, roof, etc.

D25119, D34 38

Patent

active

D03314707

REFERENCES:
patent: 2711231 (1955-06-01), Sprangler
patent: 2742121 (1956-04-01), Liskey, Jr.
patent: 3039575 (1962-06-01), Graham
patent: 3046852 (1962-07-01), Graham
patent: 3815550 (1974-06-01), Becker
patent: 3995593 (1976-12-01), Bowser
patent: 4048960 (1977-09-01), Barnidge et al.
patent: 4135339 (1979-01-01), Panlitschek
patent: 4231325 (1980-11-01), Parks
patent: 4531331 (1985-07-01), Itagaki
patent: 4951992 (1990-08-01), Hockney

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