Ring cutter

Details Ring cutter Ring cutter

1989-06-22

1992-08-25

Walsh, Donald P.

Tools and hardware

Other tools and implements

With relative movement of parts while performing function

Patent

active

D03288420

REFERENCES:
patent: D157883 (1950-03-01), Maxwell
patent: D282142 (1986-01-01), Siravo
patent: 4046148 (1977-09-01), Meador
patent: 4516574 (1985-05-01), Hewes
patent: 4587968 (1986-05-01), Price
patent: 4864730 (1989-09-01), Weiss
patent: 4976034 (1990-12-01), Whitman

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