Information
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Patent Grant
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D346753
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Patent Number
D346,753
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Date Filed
Thursday, May 10, 199034 years ago
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Date Issued
Tuesday, May 10, 199430 years ago
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Inventors
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Original Assignees
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Examiners
- Douglas; Alan P.
- Davis; Antoine D.
Agents
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US Classifications
Field of Search
US
- 073 431
- 204 198
- 204 400
- 204 401
- 204 430
- 204 433
- 204 435
- 204 406
- D10 78
- D10 81
- D24 216
- D24 231
- D24 232
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Claims
- The ornamental design for a pH and concentration meter, as shown and described.
US Referenced Citations (3)
| Number |
Name |
Date |
Kind |
|
D312421 |
Trottmann |
Nov 1990 |
|
|
D336444 |
Anderson et al. |
Jun 1993 |
|
|
5083868 |
Anderson |
Jan 1992 |
|
