Hardness tester
Kellstedt, Jr. , et al. May 5, 1
U.S. patent number D394,015 [Application Number D/068,523] was granted by the patent office on 1998-05-05 for hardness tester. This patent grant is currently assigned to Instron Corporation. Invention is credited to Charles W. Kellstedt, Jr., Joel M. Lieblein.
| United States Patent | D394,015 |
| Kellstedt, Jr. , et al. | May 5, 1998 |
Hardness tester
Claims
The ornamental design for a hardness tester, as shown and described.
| Inventors: | Kellstedt, Jr.; Charles W. (Sudbury, MA), Lieblein; Joel M. (Sudbury, MA) |
|---|---|
| Assignee: | Instron Corporation (Canton,
MA) |
| Appl. No.: | D/068,523 |
| Filed: | March 21, 1997 |
Related U.S. Patent Documents
| Application Number | Filing Date | Patent Number | Issue Date | ||
|---|---|---|---|---|---|
| 55015 | May 28, 1996 | ||||
| Current U.S. Class: | D10/83; D10/46 |
| Current International Class: | 1004 |
| Field of Search: | ;D10/46,83 ;73/81,82,83,84,85 ;328/693 |
References Cited [Referenced By]
U.S. Patent Documents
| D250514 | December 1978 | Etchison |
| D283599 | April 1986 | Biddle, Jr. et al. |
| D351804 | October 1994 | Kellstedt, Jr. et al. |
| 5616857 | April 1997 | Merck, Jr. et al. |
Attorney, Agent or Firm: Levisohn, Lerner, Berger & Langsam
Description
FIG. 1 is a perspective view of the hardness tester of this invention;
FIG. 2 is a front view of the hardness tester of this invention;
FIG. 3 is a left side view of the hardness tester of this invention;
FIG. 4 is a right side view of the hardness tester of this invention;
FIG. 5 is a top view of the hardness tester of this invention; and,
FIG. 6 is a bottom view of the hardness tester of this invention.
The rear view of the hardness tester of this invention does not form an ornamental aspect of the design of this hardness tester.
The broken line showing is for illustrative purposes only and forms no part of the claimed design.
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