USD529937SExpiredUtility
Heavy duty roof drill bit
Est. expiryApr 27, 2024(expired)· nominal 20-yr term from priority
Inventors:William J. Brady
55
PatentIndex Score
8
Cited by
9
References
1
Claims
Claims
exact text as granted — not AI-modifiedCLAIM
The ornamental design for a heavy duty roof drill bit, as shown and described.Join the waitlist — get patent alerts
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