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    [Patent no. 23185, sale no. 46]

    Archives / Collections and Fonds
    Item (linked)
    Textual material
    Item ID number:
    5420807
    Date:
    20 December 1940 (5 August 1937)
    Source:
    Government
    Reference:
    R216, RG10-D-11-a, Volume number: 10991
    [Patent no. 23185, sale no. 46]. Duffield (Alta.) Title assigned by Library and Archives Canada. Patent granting Fredericke Grinde, Delmer Earl Schaefer and 
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