Title:
Indicating apparatus
Document Type and Number:
United States Patent 2309174

Inventors:
Dodd, Arthur E.
Publication Date:
01/26/1943
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Referenced by:
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Assignee:
UNION SWITCH & SIGNAL CO
Primary Class:
340/815.730
Other Classes:
361/156, 361/189, 246/28F, 315/130
International Classes:
B61L25/08; B61L25/00




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