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    Item ID number:
    5418260
    Date:
    3 July 1924 (6 June 1917)
    Source:
    Government
    Reference:
    R216, RG10-D-11-a, Volume number: 10976
    [Patent number 20287, sale numbers 647 and 648]. Title assigned by Library and Archives Canada. Patent granting Alex M. Godkin and Alvin Russell Godkin 
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