Building units and construction elements – Structure – Simulative
Patent
1976-05-13
1977-09-27
Word, A. Hugo
Building units and construction elements
Structure
Simulative
D2501
Patent
active
D02459264
REFERENCES:
sweet's Product Design Catalog File, 1965, section 1b/Rey, p. 17, sheet at lower right of illustration.
Certain-Teed Corporation
Paul, Jr. Henry N.
Word A. Hugo
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