Grid structure

Details Grid structure Grid structure

1991-09-13

1996-11-12

Clark, Doris

Building units and construction elements

Architectural stock material

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

Patent

active

D03755649

REFERENCES:
patent: D186216 (1959-09-01), Haver
patent: D199525 (1964-11-01), Keller
patent: D254034 (1980-01-01), Amber
patent: 2048474 (1936-07-01), Schuhmacher
patent: 2256000 (1941-09-01), McNeil
patent: 3104834 (1963-09-01), Lipscomb
patent: 3481427 (1969-12-01), Dobbs et al.
patent: 4035975 (1977-07-01), Gergely
patent: 4221038 (1980-09-01), Singer et al.
patent: 4245926 (1981-01-01), Asszongi et al.
patent: 4661245 (1987-04-01), Rutherford et al.
patent: 5039567 (1991-08-01), Landi et al.

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