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Patent:US1122191


Patent:US 1122191
Title:Recording and calculating machine
Date:22.12.1914
Place:Syracuse, NY
Country:USA
Person:William H. Brown
Company:H.H. Franklin Mfg. Comp.
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Keywords:
Link to the patent office:
(without guarantee)
 US1122191 (espacenet),  US1122191 (uspto)


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