Patent:CA137383

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Patent:CA 137383
Title:Calculating machine
Date:19.12.1911
Place:
Country:Canada
Person:William W. Craig, George Watt
Company:
Internal Links:
Keywords:
Link to the patent office:
(without guarantee)
 CA137383 (http://patents.ic.gc.ca/cipo/cpd/en/patent/137383/summary.html)


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