USD312658SExpiredUtility

Combined twin-nibbed ball point pen and marking pen

76
Assignee: MITSUBISHI PENCIL COPriority: Mar 16, 1987Filed: Sep 16, 1987Granted: Dec 4, 1990
Est. expiryMar 16, 2007(expired)· nominal 20-yr term from priority
Inventors:Masayuki Sumino
76
PatentIndex Score
26
Cited by
8
References
1
Claims

Claims

exact text as granted — not AI-modified
The ornamental design for combined twin-nibbed ball-point pen and marking pen, as shown and described.

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