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  1. 1
    No digital object

    [Patent no. 19534, sale numbers 23-25]

    Archives / Collections and Fonds
    Item (linked)
    Textual material
    Item ID number:
    5417679
    Date:
    8 April 1921 (1 December 1910)
    Source:
    Government
    Reference:
    R216, RG10-D-11-a, Volume number: 10971
    [Patent no. 19534, sale numbers 23-25]. Title assigned by Library and Archives Canada. Patent granting William Atkinson Caswell and Alexander Wills S 1/2 of 
  2. 2
    No digital object

    [Patent number 19150, sale numbers 26 and 27]

    Archives / Collections and Fonds
    Item (linked)
    Textual material
    Item ID number:
    5417419
    Date:
    10 June 1920 (1 December 1910)
    Source:
    Government
    Reference:
    R216, RG10-D-11-a, Volume number: 10970
    [Patent number 19150, sale numbers 26 and 27]. Title assigned by Library and Archives Canada. Patent granting the WA Caswell & Co
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