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    Item ID number:
    5419495
    Date:
    15 November 1929 (3 October 1924)
    Source:
    Government
    Reference:
    R216, RG10-D-11-a, Volume number: 10984
    [Patent no. 21786, sale no. 8]. Title assigned by Library and Archives Canada. Patent granting Charles Nelson Pretty, Harry Rolfe Pretty and Arthur and 
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