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			 The ornamental design for photodiode, as shown.  | 
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FIG. 1 is a front, bottom and right side perspective view of a photodiode showing our new design;
FIG. 2 is a front elevational view thereof;
FIG. 3 is a top plan view thereof;
FIG. 4 is a rear elevational view thereof;
FIG. 5 is a left side elevational view thereof; and
FIG. 6 is a right side elevational view thereof.
Yamabayashi, Naoyuki, Nishizawa, Hideaki
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| Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc | 
| May 21 1984 | NISHIZAWA, HIDEAKI | SUMITOMO ELECTRIC INDUSTRIES, LTD | ASSIGNMENT OF ASSIGNORS INTEREST | 004642 | /0323 | |
| May 21 1984 | YAMABAYASHI, NAOYUKI | SUMITOMO ELECTRIC INDUSTRIES, LTD | ASSIGNMENT OF ASSIGNORS INTEREST | 004642 | /0323 | |
| Jun 12 1984 | Sumitomo Electric Industries, Ltd. | (assignment on the face of the patent) | / | 
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