Floating automatic signaling apparatus
United States Patent 2323064

Inventors:
Lustfield, Herman G.
Publication Date:
06/29/1943
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Assignee:
Lustfield, Herman G.
Primary Class:
455/96
Other Classes:
343/709, 343/895, 341/173, 220/263, 441/13, 290/51, 367/137
International Classes:
B64D25/20; B64D25/00