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    Item ID number:
    5420357
    Date:
    6 December 1934 (14 June 1911)
    Source:
    Government
    Reference:
    R216, RG10-D-11-a, Volume number: 10988
    [Patent no. 22691, sale numbers 136-140 and 148-152]. Title assigned by Library and Archives Canada. Patent granting James D. Ponton, Thomas A
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