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United States Patent 3059233

Inventors:
Guarino, Louis S.
Vaccaro Jr., Joseph
Publication Date:
10/16/1962
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Assignee:
Guarino, Louis S.
Vaccaro Jr., Joseph
Primary Class:
Other Classes:
33/1CC, 340/979
International Classes:
G01C23/00
US Patent References:
2978674Navigational instruments