Building units and construction elements – Prefabricated unit – Finishing unit
Patent
1993-03-22
1995-08-08
Clark, Doris
Building units and construction elements
Prefabricated unit
Finishing unit
Patent
active
D03611345
REFERENCES:
patent: D228493 (1973-10-01), Hrusch
patent: D295080 (1988-04-01), Willan
patent: D341668 (1993-11-01), Herter
patent: 2249106 (1941-07-01), Baumgartl
patent: 3466830 (1969-09-01), Smith
patent: 3828506 (1974-08-01), Phillips
patent: 4569175 (1986-02-01), Abciuk
patent: 4926606 (1990-05-01), Hanson
patent: 5040347 (1991-08-01), Valvis
patent: 5088255 (1992-02-01), Emanuel
patent: 5165208 (1992-11-01), Lingemann
Armstrong World Industries Inc.
Clark Doris
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