USD260599SExpiredUtility
Ratchet screwdriver
Assignee: CHING WAH METAL WARE FACTORY LTDPriority: Mar 19, 1979Filed: Mar 19, 1979Granted: Sep 8, 1981
Est. expiryMar 19, 1999(expired)· nominal 20-yr term from priority
Inventors:Siu Wa Wong
72
PatentIndex Score
13
Cited by
3
References
1
Claims
Claims
exact text as granted — not AI-modifiedThe ornamental design for a ratchet screwdriver, substantially as shown.
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