Punch retainer

Details Punch retainer Punch retainer

1992-06-10

1994-04-19

Douglas, Alan P.

Machines not elsewhere specified

Material working, abrading, or founding machinery

Element or attachment

Patent

active

D03461742

REFERENCES:
patent: D218910 (1970-10-01), Gargrave
patent: 1910296 (1933-05-01), King
patent: 2107581 (1938-02-01), Parsons et al.
patent: 2154738 (1939-04-01), Fisher
patent: 2920913 (1960-01-01), Antila
patent: 3103845 (1963-09-01), Porter et al.
patent: 3563124 (1971-02-01), Gargrave
patent: 3640170 (1972-02-01), Bennett
patent: 3690209 (1972-09-01), Gargrave
patent: 4103574 (1978-08-01), Greer
patent: 4558620 (1985-12-01), Wallis
patent: 5038599 (1991-08-01), Wellman

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