Indicating instrument
United States Patent 2511202
US Patent References:
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Inventors:
Fulboam, Elsie G.
Publication Date:
06/13/1950
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Assignee:
Fulboam, Elsie G.
Primary Class:
235/125
Other Classes:
401/52, 235/64, 434/353, 377/55
International Classes:
G06M11/00
US Patent References:
0990736
Foreign References:
DE116826C