USD351174SExpiredUtility

Roof drill bit for mining machine

94
Assignee: BRADY WILLIAM JPriority: Jul 19, 1993Filed: Jul 19, 1993Granted: Oct 4, 1994
Est. expiryJul 19, 2013(expired)· nominal 20-yr term from priority
Inventors:William J. Brady
94
PatentIndex Score
50
Cited by
4
References
1
Claims

Claims

exact text as granted — not AI-modified
The ornamental design for a roof drill bit for mining machine, as shown and described.

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