Over-reamer drill tool for pilot bit

Details Over-reamer drill tool for pilot bit Over-reamer drill tool for pilot bit

2002-06-03

2004-03-23

Siegel, Mitchell (Department: 2912)

Machines not elsewhere specified

Agricultural or construction machinery

Drilling, mining, or soil treatment

Design Patent

active

D0487753

CLAIM:
The ornamental design for an over-reamer drill tool for pilot bit, as shown and described.

REFERENCES:
patent: 4711312 (1987-12-01), Leibee et al.
patent: 4852671 (1989-08-01), Southland
patent: 5025874 (1991-06-01), Barr et al.
patent: 5400861 (1995-03-01), Sheirer
patent: 5429199 (1995-07-01), Sheirer et al.
patent: D424579 (2000-05-01), Brady
patent: D430578 (2000-09-01), Brady
patent: 6427782 (2002-08-01), Brady

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