|
The ornamental design for a refractometer, as shown and described. |
FIG. 1 is a left front, top perspective view of a refractometer showing my new design;
FIG. 2 is a right side elevational view thereof; and
FIG. 3 is a rear elevational view thereof.
The bottom of the design is substantially plain and unornamented.
Patent | Priority | Assignee | Title |
D316144, | Feb 12 1988 | Canon Kabushiki Kaisha | Refractometer |
D327024, | Dec 29 1989 | Essilor International (Compagnie Generale d'Optique) | Refractometer |
D457962, | Nov 08 2001 | REICHERT, INC | Automatic refractometer |
Patent | Priority | Assignee | Title |
226340, | |||
D285113, | Nov 25 1983 | WARNER LAMBERT TECHNOLOGIES, INC | Urinometer |
D285485, | Nov 25 1983 | CAMBRIDGE INSTRUMENTS INC , A DE CORP | Refractometer |
Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc |
Nov 21 1985 | Warner-Lambert Technologies, Inc. | (assignment on the face of the patent) | / | |||
Nov 30 1985 | KAHUTE, ROBERT M | WARNER LAMBERT TECHNOLOGIES, INC | ASSIGNMENT OF ASSIGNORS INTEREST | 004506 | /0143 | |
Apr 07 1988 | WARNER LAMBERT TECHNOLOGIES, INC | CAMBRIDGE INSTRUMENTS INC , A DE CORP | ASSIGNMENT OF ASSIGNORS INTEREST | 004893 | /0097 |
Date | Maintenance Fee Events |
Date | Maintenance Schedule |