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    Item ID number:
    5419867
    Date:
    8 May 1931 (2 May 1928)
    Source:
    Government
    Reference:
    R216, RG10-D-11-a, Volume number: 10985
    [Patent no. 22174, sale no. 793]. Title assigned by Library and Archives Canada. Patent granting Martin Johnson, Harry Wessen and William J
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