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The ornamental design for a tennis ball projector for training purposes, as shown. |
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FIG. 1 is a top plan view of a tennis ball projector for training purposes embodying my new design;
FIG. 2 is a front view;
FIG. 3 is a bottom plan view;
FIG. 4 is a left side view;
FIG. 5 is a right side view;
FIG. 6 is a rear view;
FIG. 7 is a perspective view.
Hirabayashi, Tsugio, Nakai, Michio
| Patent | Priority | Assignee | Title |
| D294411, | Dec 18 1985 | Dynamic Behavioral Systems Inc. | Ball launcher pet recreational unit |
| D430468, | Sep 07 1999 | Automatic cork extractor | |
| D641437, | Aug 24 2010 | TH LOBSTER TENNIS, LLC | Ball throwing machine |
| D911468, | Oct 03 2018 | Remote ball launcher |
| Patent | Priority | Assignee | Title |
| 3905349, | |||
| 4291665, | Oct 26 1979 | CITICORP NORTH AMERICA, INC | Propulsion device for spherical objects having an oscillating support frame providing a programmed discharge of said objects |
| 212769, | |||
| GB2057893, |
| Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc |
| Dec 15 1980 | Sony Corporation | (assignment on the face of the patent) | / |
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