| 20020167493 | Pointing device having a roller with a rough surface | Lin | 345/167 |
FIG. 2 is a top plan view thereof;
FIG. 3 is a bottom plan view thereof;
FIG. 4 is a rear elevation view thereof;
FIG. 5 is a left side elevation view thereof;
FIG. 6 is a right side elevation view thereof;
FIG. 7 is a cross section view taken along lines 7—7 of FIG. 2 with an internal structure being omitted; and,
FIG. 8 is a cross section view taken along lines 8—8 of FIG. 2 with an internal structure being omitted.