Door structure

Details Door structure Door structure

1981-04-07

1983-09-13

Word, A. Hugo

Building units and construction elements

Prefabricated unit

Closure

D25 60, D25 74, D2502

Patent

active

D02705699

REFERENCES:
patent: D182509 (1958-04-01), Etling
patent: D201873 (1965-08-01), Damiani
patent: 2818145 (1957-12-01), Bragman et al.
patent: 3002592 (1961-10-01), Quinn
patent: 3086628 (1963-04-01), Robinson
patent: 4106238 (1978-08-01), Bonello

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