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Patent:US178505


Patent:US 178505
Title:Improvement in calendars and adding-machines
Date:13.06.1876
Place:Hartford, Ohio, USA
Country:USA
Person:Broomhall, Webb (P)
Company:
Internal Links:
Keywords:
Link to the patent office:
(without guarantee)
 US178505 (espacenet),  US178505 (uspto)


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