Plotter pen housing
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Description
FIG. 1 is a perspective view of a plotter pen housing showing our new design;
FIG. 2 lis a side elevational view thereof;
FIG. 3 is a front elevational view thereof;
FIG. 4 is a cross-sectional view thereof, taken on line 4--4 of FIG. 2;
FIG. 5 is a cross-sectional view thereof, taken on line 5--5 of FIG. 2; and,
FIG. 6 is a partial cross-sectional view thereof, on an enlarged scale.
Referenced Cited
U.S. Patent Documents
Other references
2706580 | April 1955 | Keith |
2714475 | August 1955 | Roehrich |
3463323 | August 1969 | Riepe |
3788754 | January 1974 | Glasa |
4102584 | July 25, 1978 | Anderka |
4823148 | April 18, 1989 | Sieber et al. |
4928121 | May 22, 1990 | Raahauge |
- Devoke Catalog item ploter pen, p. 34, Spring 1987. Global Catalog plotter pens, p. 41, Feb. 1987. Global Catalog plotter pens, p. 14, Oct. 1987. Fidelity Graphic Arts Catalog plotter pen, p. 25. Business Land Catalog plotter pen p. 80, 1989.
Patent History
Patent number: D352703
Type: Grant
Filed: Apr 18, 1990
Date of Patent: Nov 22, 1994
Assignee: Texas Instruments Incorporated (Dallas, TX)
Inventors: Larry D. Mitcham (Temple, TX), Kelsey R. Walker (Hockley, TX), Robert E. Pitts (Hockley, TX)
Primary Examiner: Wallace R. Burke
Assistant Examiner: M. H. Tung
Attorneys: Ronald O. Neerings, James C. Kesterson, Richard L. Donaldson
Application Number: 7/510,489
Type: Grant
Filed: Apr 18, 1990
Date of Patent: Nov 22, 1994
Assignee: Texas Instruments Incorporated (Dallas, TX)
Inventors: Larry D. Mitcham (Temple, TX), Kelsey R. Walker (Hockley, TX), Robert E. Pitts (Hockley, TX)
Primary Examiner: Wallace R. Burke
Assistant Examiner: M. H. Tung
Attorneys: Ronald O. Neerings, James C. Kesterson, Richard L. Donaldson
Application Number: 7/510,489
Classifications
Current U.S. Class:
D14/114