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    Item ID number:
    5421821
    Date:
    10 March 1950 (26 August 1949)
    Source:
    Government
    Reference:
    R216, RG10-D-11-a, Volume number: 10996
    [Patent no. 24369, sale no. 236]. Title assigned by Library and Archives Canada. Patent granting Mrs. JA Crough and Joseph A
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