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    Item ID number:
    5420683
    Date:
    21 October 1938 (26 August 1938)
    Source:
    Government
    Reference:
    R216, RG10-D-11-a, Volume number: 10990
    [Patent no. 23035, sale no. 31]. Title assigned by Library and Archives Canada. Patent granting Sophia W. Cleland and Ernest A
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