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    Item ID number:
    5421010
    Date:
    17 December 1943 (8 October 1938)
    Source:
    Government
    Reference:
    R216, RG10-D-11-a, Volume number: 10992
    [Patent no. 23428, sale no. 270A]. Title assigned by Library and Archives Canada. Patent granting Wesley Ernest Christian and Ernest J
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