Ballpoint pen

- Tokai Corporation

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Description

FIG. 1 is a top, right front perspective view of a ballpoint pen showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a right side elevational view thereof;

FIG. 4 is a left side elevational view thereof;

FIG. 5 is a rear elevational view thereof;

FIG. 6 is a top plan view thereof;

FIG. 7 is a bottom plan view thereof; and,

FIG. 8 is a left side elevational view in an exploded condition.

Referenced Cited
U.S. Patent Documents
D98265 January 1936 Lynn
D104939 June 1937 Hauton
D128390 July 1941 Christenson, Jr.
D146527 March 1947 Shetlin
D209993 January 1968 Horie
D221033 June 1971 Wakai
D221265 July 1971 Wakai
D273399 April 10, 1984 Zierhut
D282754 February 25, 1986 LeBlanc et al.
D284676 July 15, 1986 Malm
D308396 June 5, 1990 Sekiguchi
Other references
  • Jacobs Gardner Office Products .COPYRGT.1988 see item J p. 584, lower center-desk copy.
Patent History
Patent number: D328311
Type: Grant
Filed: Apr 25, 1989
Date of Patent: Jul 28, 1992
Assignee: Tokai Corporation (Yokohama)
Inventor: Tomio Nitta (Yokohama)
Primary Examiner: Donald P. Walsh
Assistant Examiner: Martha Thompson
Law Firm: Nikaido, Marmelstein, Murray & Oram
Application Number: 7/344,142