Title:
Building insulation
United States Patent 2235542

Inventors:
Amanda, Wenzel
Publication Date:
03/18/1941
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Assignee:
Amanda, Wenzel
Primary Class:
52/404.100
Other Classes:
52/742.130, 406/122, 241/39, 406/154, 406/196, 241/60, 62/DIG.013
International Classes:
E04B1/76; E04F21/08; E04F21/02