Step drill bit with stop

Details Step drill bit with stop Step drill bit with stop

2006-08-15

2006-08-15

Davis, Antoine D. (Department: 2915)

Machines not elsewhere specified

Material working, abrading, or founding machinery

Element or attachment

Design Patent

active

D0526670

CLAIM:
The ornamental design for a step drill bit with stop, as shown and described.

REFERENCES:
patent: 2786373 (1957-03-01), Patton
patent: 3564945 (1971-02-01), Bradly
patent: 4127355 (1978-11-01), Oakes
patent: 4582458 (1986-04-01), Korb et al.
patent: 5466100 (1995-11-01), Ahluwalia
patent: 6890133 (2005-05-01), Singh et al.

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