Sound shell structure

Details Sound shell structure Sound shell structure

1978-07-28

1980-10-14

Word, A. Hugo

Building units and construction elements

Structure

Having curved or vaulted roof

D25 13, D25 59, D2503

Patent

active

D02573920

REFERENCES:
patent: 3374588 (1968-03-01), Alfrey, Jr. et al.
patent: 3871143 (1975-03-01), Quick
patent: 4071985 (1978-02-01), Wickwire
patent: 4098281 (1978-07-01), Bonfilio

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