Building units and construction elements – Structure – Simulative
Patent
1977-06-13
1979-12-04
Word, A. Hugo
Building units and construction elements
Structure
Simulative
D25 79, D2501
Patent
active
D02536145
REFERENCES:
patent: 2249424 (1941-07-01), Hanington
patent: 3850471 (1974-11-01), Johnson
Sweet's Architectural Catalog File, 1977, section 8.35/Na, p. 15, top left item.
Jones, Jr. Harold D.
Word A. Hugo
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