Computing device
United States Patent 2586421

Inventors:
Evers, Dundred D.
Publication Date:
02/19/1952
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Assignee:
Navy US.
Primary Class:
74/721
Other Classes:
476/38, 235/61C
International Classes:
G06G3/08; G06G3/00
US Patent References:
1963457Latitude and longitude meter
2139635Universal antiaircraft sight
2139636Nocturnal antiaircraft fire control device
2412468Variable speed device
Foreign References:
FR777913A
GB188527A
CH205989A
CH216998A