USD488978SExpiredUtility
Hammer drill
Est. expiryNov 13, 2022(expired)· nominal 20-yr term from priority
Inventors:Benson Chun Kit Cheung
88
PatentIndex Score
38
Cited by
15
References
1
Claims
Claims
exact text as granted — not AI-modifiedThe ornamental design for a hammer drill, as shown and described.
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