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The ornamental design for a refractometer, as shown and described.
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FIG. 1 is a perspective view of a refractometer.
FIG. 2 is a right side elevational view of the invention.
FIG. 3 is a left side elevational view of the invention.
FIG. 4 is a top plan view of the invention.
FIG. 5 is a bottom plan view of the invention.
FIG. 6 is a front elevational view of the invention; and,
FIG. 7 is a rear elevational view of the invention.
McFarland, Guy E., Wendling, Paul J., Hok, Mui Hing
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| Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc |
| Jan 14 2019 | HOK, MUI HING | VEE GEE SCIENTIFIC, INC | ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS | 048208 | /0446 | |
| Jan 21 2019 | MC FARLAND, GUY E | VEE GEE SCIENTIFIC, INC | ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS | 048208 | /0446 | |
| Jan 25 2019 | WENDLING, PAUL J | VEE GEE SCIENTIFIC, INC | ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS | 048208 | /0446 |
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