Erasable four-color pen
Description
FIG. 1 is a front, top and side perspective view of the erasable four-color pen embodying the design of the present invention;
FIG. 2 is a front end elevational view thereof;
FIG. 3 is a rear end elevational view thereof; and,
FIG. 4 is a side elevational view thereof, the side opposite and the top and bottom all being identical to the side shown in FIG. 4.
Referenced Cited
U.S. Patent Documents
Foreign Patent Documents
| D155613 | October 1949 | Kahn |
| D338039 | August 3, 1993 | Takahashi |
| 709211 | September 1902 | Elkan |
| 1765151 | June 1930 | Hansen |
| 2926630 | March 1960 | Csaby |
| 4056325 | November 1, 1977 | Maruyama |
| 4123179 | October 31, 1978 | Pacheco |
| 4971628 | November 20, 1990 | Loftin |
| 4973672 | November 27, 1990 | Bauer |
| 5006171 | April 9, 1991 | Mecke |
| 806411 | July 1949 | DEX |
Patent History
Patent number: D353619
Type: Grant
Filed: Feb 5, 1993
Date of Patent: Dec 20, 1994
Inventor: Timothy D. Kneller (Dallas, TX)
Primary Examiner: Martie Thompson
Attorney: Terry M. Gernstein
Application Number: 0/4,492
Type: Grant
Filed: Feb 5, 1993
Date of Patent: Dec 20, 1994
Inventor: Timothy D. Kneller (Dallas, TX)
Primary Examiner: Martie Thompson
Attorney: Terry M. Gernstein
Application Number: 0/4,492
Classifications