Portable hydraulic punching instrument

Details Portable hydraulic punching instrument Portable hydraulic punching instrument

1989-07-12

1993-02-09

Walsh, Donald P.

Machines not elsewhere specified

Material working, abrading, or founding machinery

Cutting

D15127

Patent

active

D03331423

REFERENCES:
patent: 2782855 (1957-02-01), Marcoux
patent: 3008234 (1961-11-01), Mattera
patent: 3126630 (1964-03-01), Catlin et al.
patent: 3924330 (1975-12-01), Mitsuhashi et al.
patent: 4468995 (1984-09-01), Mireles-Saldiver
patent: 4731929 (1988-03-01), McClure
patent: 4786215 (1988-11-01), McClure

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