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The ornamental design for a refractometer, as shown and described. |
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FIG. 1 is a front elevational view of a refractometer showing my new design;
FIG. 2 is a rear elevational view thereof;
FIG. 3 is a top plan view thereof;
FIG. 4 is a bottom plan view thereof;
FIG. 5 is a left side elevational view thereof;
FIG. 6 is a right side elevational view thereof;
FIG. 7 is a perspective view thereof in use position.
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| Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc |
| Jul 28 1988 | NISHIMURA, HIROSHI | CANON KABUSHIKI KAISHA, A CORP OF JAPAN | ASSIGNMENT OF ASSIGNORS INTEREST | 004915 | /0790 | |
| Aug 09 1988 | Canon Kabushiki Kaisha | (assignment on the face of the patent) | / |
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