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  1. 1
    No digital object
    Archives / Collections and Fonds
    Item (linked)
    Textual material
    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 
  2. 2
    No digital object
    Archives / Collections and Fonds
    Item (linked)
    Textual material
    Item ID number:
    5419497
    Date:
    20 November 1929 (7 March 1925)
    Source:
    Government
    Reference:
    R216, RG10-D-11-a, Volume number: 10984
    [Patent no. 21788, sale no. 14]. Title assigned by Library and Archives Canada. Patent granting Wesley Cartmell, Harry Rolfe Pretty and Charles Nelson 
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