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    Item ID number:
    5421456
    Date:
    7 January 1947 (6 June 1917)
    Source:
    Government
    Reference:
    R216, RG10-D-11-a, Volume number: 10994
    [Patent number 23964, sale numbers 416 and 417]. Title assigned by Library and Archives Canada. Patent granting Chris Bartsch and Sam J
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