USD309559SExpiredUtility

Drill bit sharpener

Assignee: VACCARO DANIELPriority: Oct 2, 1987Filed: Oct 2, 1987Granted: Jul 31, 1990
Est. expiryOct 2, 2007(expired)· nominal 20-yr term from priority
Inventors:Daniel Vaccaro
36
PatentIndex Score
3
Cited by
3
References
1
Claims

Claims

exact text as granted — not AI-modified
The ornamental design for a drill bit sharpener, as shown.

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