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