| 
 | The ornamental design for a ball valve, as shown and described. | |||||||||||||||||
FIG. 1 is a front, top and right side perspective view of a ball valve showing our new design;
FIG. 2 is a front elevational view thereof the rear being a mirror image of the front shown;
FIG. 3 is a right side elevational view thereof;
FIG. 4 is a top plan view thereof;
FIG. 5 is a left side elevational view thereof; and
FIG. 6 is a bottom plan view thereof.
Hashimoto, Mitsuharu, Odate, Masayoshi
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| Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc | 
| Jun 14 1985 | ODATE, MASAYOSHI | Sekisui Kagaku Kogyo Kabushiki Kaisha | ASSIGNMENT OF ASSIGNORS INTEREST | 004900/ | 0753 | |
| Jun 14 1985 | HASHIMOTO, MITSUHARU | Sekisui Kagaku Kogyo Kabushiki Kaisha | ASSIGNMENT OF ASSIGNORS INTEREST | 004900/ | 0753 | |
| Jun 28 1985 | Sekisui Kagaku Kogyo K.K. | (assignment on the face of the patent) | / | 
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