Building units and construction elements – Architectural stock material – Elongated
Patent
1998-06-16
1999-06-29
Clark, Doris
Building units and construction elements
Architectural stock material
Elongated
2501
Patent
active
D04116305
REFERENCES:
patent: D293935 (1988-01-01), Allen, Jr.
patent: 4692961 (1987-09-01), Brown
patent: 5056263 (1991-10-01), Bies
Clark Doris
Fraser Donald R.
Impact Products, Inc.
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