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On This Day
3 December:
(under construction)
See Also
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.
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inventors
.
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mini profiles
.
Nagano, Manzo
See also:
Mini profiles
and
Canadian Books and Authors
.