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    Item ID number:
    5421800
    Date:
    4 January 1950 (1 September 1949)
    Source:
    Government
    Reference:
    R216, RG10-D-11-a, Volume number: 10996
    [Patent no. 24344, sale no. 596]. Escott (Ont.) Title assigned by Library and Archives Canada. Patent granting Doris E. Simester and James R
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