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    Item ID number:
    5417930
    Date:
    12 May 1922 (24 June 1908)
    Source:
    Government
    Reference:
    R216, RG10-D-11-a, Volume number: 10974
    [Patent no. 19842, sale no. 35]. Title assigned by Library and Archives Canada. Patent granting Peter M. Johnson, Carl Peter Carlson, Mabel J
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