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The ornamental design for a ball end mill, as shown. |
FIG. 1 is a front elevational view of a ball end mill showing our new design;
FIG. 2 is a right side elevational view;
FIG. 3 is a left side elevational view;
FIG. 4 is a rear elevational view;
FIG. 5 is a top plan view;
FIG. 6 is a bottom plan view; and,
FIG. 7 is a front and left side perspective view thereof.
Arai, Tatsuo, Okawa, Masayuki, Tsujimura, Osamu
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Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc |
Apr 05 1988 | TSUJIMURA, OSAMU | Mitsubishi Kinzoku Kabushiki Kaisha | ASSIGNMENT OF ASSIGNORS INTEREST | 004879 | /0750 | |
Apr 05 1988 | ARAI, TATSUO | Mitsubishi Kinzoku Kabushiki Kaisha | ASSIGNMENT OF ASSIGNORS INTEREST | 004879 | /0750 | |
Apr 05 1988 | OKAWA, MASAYUKI | Mitsubishi Kinzoku Kabushiki Kaisha | ASSIGNMENT OF ASSIGNORS INTEREST | 004879 | /0750 | |
Apr 13 1988 | Mitsubishi Kinzoku Kabushiki Kaisha | (assignment on the face of the patent) | / | |||
Dec 01 1990 | MITSUBISHI KINZOKU KABUSHIKI KAISHA 5-2, OTEMACHI 1-CHOME, CHIYODA-KU TOKYO | Mitsubishi Materials Corporation | DOCUMENT IS BEING RECORDED AS A CHANGE OF NAME AND A CHANGE OF ADDRESS CHANGE OF NAME EFFECTIVE 12-01-90 AND CHANGE OF ADDRESS EFFECTIVE 11-28-88 | 005810 | /0070 |
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