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    Item ID number:
    5419482
    Date:
    23 October 1929 (8 June 1910)
    Source:
    Government
    Reference:
    R216, RG10-D-11-a, Volume number: 10984
    [Patent no. 21772, sale numbers 9-87]. Title assigned by Library and Archives Canada. Patent granting DH Hudson, Myron R. McKinnon and George H
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