Class 30/420 - Roller drive means causes initial piercing

Subclass of Class 30 - Cutlery
Definition: Device wherein force applied to rotate the wheel-like member
No. of patents: 1
Last issue date: 03/01/1994

Number	Title	Issue Date
5289638	Safety can opener A can opener for opening cans of the type having a lid joined to the main body by a rim formed of inner and outer lid surfaces folded onto the upper edge of a can wall. A toothed drive wheel rotatably mounted on a housing engages the inner surface of the ...	03/01/1994

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