Title:
Weatherproof sidewalk door
United States Patent 1837916


Inventors:
Nathan, Michelman
Application Number:
US21845627A
Publication Date:
12/22/1931
Filing Date:
09/09/1927
Assignee:
Nathan, Michelman
Primary Class:
Other Classes:
49/33, 49/398
International Classes:
E02D29/14; E02D29/12
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