
Kent's Patent Rotary hand-powered knife cleaning machine
1910
1910
1903-1905
1930
1961
1937
1911
1919
1937
1960
1945
1937
1919
1954
1930
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1957
1922
1937
1951
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1929
1931
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1908
1908
1960
1937
1937
1908
1907
1925
1963
1955
1985-2005
1937
1993
1953
1953
1914
1964
1951-1960