Building units and construction elements – Structure – Fully enclosed
Patent
1986-03-31
1989-03-21
Word, A. Hugo
Building units and construction elements
Structure
Fully enclosed
D25 16, D25 25
Patent
active
D03003620
REFERENCES:
patent: D253791 (1979-12-01), Whitney
patent: 3729889 (1973-05-01), Baruzzini
Nelson Gregory J.
Word A. Hugo
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