PH meter
Johnson August 14, 1
U.S. patent number D309,867 [Application Number 07/097,466] was granted by the patent office on 1990-08-14 for ph meter. This patent grant is currently assigned to Beckman Instruments, Inc.. Invention is credited to Ronald C. Johnson.
| United States Patent | D309,867 |
| Johnson | August 14, 1990 |
PH meter
Claims
The ornamental design for a pH meter, as shown.
| Inventors: | Johnson; Ronald C. (Fullerton, CA) |
|---|---|
| Assignee: | Beckman Instruments, Inc.
(Fullerton, CA) |
| Appl. No.: | 07/097,466 |
| Filed: | September 16, 1987 |
| Current U.S. Class: | D10/81 |
| Field of Search: | ;D10/46,57,78,81,75,102,103 ;73/431 ;204/1T,1H,196,433,435 ;324/156,438 ;204/407,430,1W |
References Cited [Referenced By]
U.S. Patent Documents
| 3294662 | December 1966 | Matlow |
| 4154659 | May 1979 | Zetter |
| 4461998 | July 1984 | Kater |
| 4490235 | December 1984 | Calzi |
Other References
|
Transeat, pH/mV/Temperature Meter, 1986, p. 373, found in (A.U. 293) Ex. Davis Library.. |
Primary Examiner: Holtje; Nelson C.
Assistant Examiner: Davis; Antoinc D.
Attorney, Agent or Firm: May; William H. Harder; Paul R.
Description
FIG. 1 is a top plan, front and left side perspective view of a pH meter showing my new design;
FIG. 2 is a bottom plan, rear, and right side perspective view; and
FIG. 3 is a top plan, front, and left side perspective view of another embodiment of FIGS. 1 and 2 thereof.
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