USD341533SExpiredUtility

Portable electric hammer drill

75
Assignee: RYOBI LTDPriority: Oct 30, 1991Filed: Apr 2, 1992Granted: Nov 23, 1993
Est. expiryOct 30, 2011(expired)· nominal 20-yr term from priority
Inventors:Nobuhiko KarafujiMasakazu Sakamoto
75
PatentIndex Score
17
Cited by
3
References
1
Claims

Claims

exact text as granted — not AI-modified
The ornamental design for a portable electric hammer drill, as shown.

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