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Patent:US2324957


Patent:US 2324957
Title:Calculating device
Date:20.07.1943
Place:Rocky River, OH
Country:USA
Person:William F. Shaw
Company:Horace C. Mayer
Internal Links:
Keywords:
Link to the patent office:
(without guarantee)
 US2324957 (espacenet),  US2324957 (uspto)


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