Title:
Holder
United States Patent 2216886

Inventors:
Langelier, Wilfred F.
Publication Date:
10/08/1940
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Assignee:
Langelier, Wilfred F.
Primary Class:
248/311.200
Other Classes:
126/30, 248/70, 248/297.510, 24/563, D13/132, 222/181.200, 248/231.810, 248/229.160, 24/570
International Classes:
B01L9/00