Building units and construction elements – Structure – Having curved or vaulted roof
Patent
1976-12-29
1978-09-19
Word, A. Hugo
Building units and construction elements
Structure
Having curved or vaulted roof
D25 33, D25 56, D2503
Patent
active
D02495570
REFERENCES:
patent: D245338 (1977-08-01), Barr
patent: 3875926 (1975-04-01), Frank
patent: 3973367 (1976-08-01), Johnson et al.
patent: 4000734 (1977-01-01), Matlock
patent: 4004574 (1977-01-01), Barr
patent: 4020827 (1977-05-01), Harrigan et al.
patent: 4034735 (1977-07-01), Waldrip
AAI Corporation
Pippin, Jr. Reginald F.
Word A. Hugo
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