Drilling machine

Details Drilling machine Drilling machine

1990-04-10

1992-10-27

Walsh, Donald P.

Machines not elsewhere specified

Material working, abrading, or founding machinery

Cutting

Patent

active

D03305589

REFERENCES:
patent: D184835 (1959-04-01), Snyder
patent: D277865 (1985-03-01), Chen
patent: D280626 (1985-09-01), Chen
patent: D284970 (1986-08-01), Wolff
patent: D285797 (1986-09-01), Archart
patent: 4655649 (1987-04-01), Hzov et al.

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