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    Item ID number:
    5405594
    Date:
    23 September 1915 (5 June 1912)
    Source:
    Government
    Reference:
    R216, RG10-D-11-a, Volume number: 10964
    [Patent no. 17574, sale no. 301]. Title assigned by Library and Archives Canada. Patent granting JR Dixon, AA Crawford, Milton M. Campbell and Louis F
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