Viewing window

Details Viewing window Viewing window

1989-05-18

1991-12-03

Word, A. Hugo

Building units and construction elements

Prefabricated unit

Closure

D25 48

Patent

active

D03221296

REFERENCES:
patent: 93502 (1910-10-01), Hamiman et al.
patent: D179029 (1956-10-01), Nielsen
patent: D302311 (1988-07-01), Buck
patent: 4791762 (1988-12-01), Hwang

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