Device for securing objects to walls and similar structures
United States Patent 2111034

Inventors:
Porwoll, Frank J.
Publication Date:
03/15/1938
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Assignee:
Porwoll, Frank J.
Primary Class:
248/74.300
Other Classes:
248/65, 52/714, 248/231.910, 248/205.100
International Classes:
F16L3/04; F16L3/02