Portable manual knife sharpener

Details Portable manual knife sharpener Portable manual knife sharpener

1992-06-11

1993-12-07

Holtje, Nelson C.

Tools and hardware

Other tools and implements

With relative movement of parts while performing function

Patent

active

D03420035

REFERENCES:
patent: D169539 (1953-05-01), Folli
patent: D309414 (1990-07-01), Shimizu
patent: D309415 (1990-07-01), Shimizu
patent: D331688 (1992-12-01), Busse
patent: 4928436 (1990-05-01), Linden

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