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On This Day
23 August:
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Canadian Books & Authors
Mini Profile
George H. Cluthe

The owner of Cluthe Manufacturing Co. in Waterloo, Ontario invented the interchangeable head screwdriver. He patented the design in 1965.

See other inventors.

See all mini profiles.


Chell, Walter
Dickins, Punch
Gosling, James
May, Wop
Morrow, Patrick


See also: Mini profiles and Canadian Books and Authors.