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  1. 1
    1 digital object(s)
    Archives / Collections and Fonds
    Item (linked)
    Textual material
    Item ID number:
    5403036
    Date:
    4 September 1907 (8 August 1900)
    Source:
    Government
    Reference:
    R216, RG10-D-11-a, Volume number: 10952
    [Patent no. 14873, sale no. 1564]. Robinson (Ont.) Title assigned by Library and Archives Canada. Patent granting William A Irving and Robert J Porter lot 
  2. 2
    No digital object
    Archives / Collections and Fonds
    Item (linked)
    Textual material
    Item ID number:
    5418893
    Date:
    15 May 1928 (16 October 1899)
    Source:
    Government
    Reference:
    R216, RG10-D-11-a, Volume number: 10981
    [Patent no. 21164, sale no. 1382]. Robinson (Ont.) Title assigned by Library and Archives Canada. Patent granting Mathew A Irving and William Ainslie lot 7 
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