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The ornamental design for a portable electric screw driver, as shown. |
FIG. 1 is a front perspective view of the portable electric screw driver showing our new design;
FIG. 2 is a front elevational view thereof;
FIG. 3 is a rear elevational view thereof;
FIG. 4 is a right side elevational view thereof;
FIG. 5 is a left side elevational view thereof;
FIG. 6 is a top plan view thereof; and
FIG. 7 is a bottom plan view thereof.
Sasaki, Yuichiro, Uchida, Toshiaki
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Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc |
Dec 16 1987 | SASAKI, YUICHIRO | HITACHI KOKI COMPANY, 6-2, OOTE-MACHI 2-CHOME, CHIYODA-KU, TOKYO, JAPAN | ASSIGNMENT OF ASSIGNORS INTEREST | 004817 | /0786 | |
Dec 16 1987 | UCHIDA, TOSHIAKI | HITACHI KOKI COMPANY, 6-2, OOTE-MACHI 2-CHOME, CHIYODA-KU, TOKYO, JAPAN | ASSIGNMENT OF ASSIGNORS INTEREST | 004817 | /0786 | |
Dec 21 1987 | Hitachi Koki Company, Ltd. | (assignment on the face of the patent) | / |
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