Patent
   D312421
Priority
Sep 04 1987
Filed
Sep 04 1987
Issued
Nov 27 1990
Expiry
Nov 27 2004
Assg.orig
Entity
unknown
13
10
n/a
The ornamental design for a ph meter, as shown.

FIG. 1 is a top, front and right side perspective view of a pH meter showing my new design;

FIG. 2 is a top plan view;

FIG. 3 is a left side perspective view;

FIG. 4 is a bottom plan view;

FIG. 5 is a right side perspective view;

FIG. 6 is a front elevational view; and

FIG. 7 is a rear elevational view thereof.

Trottmann, Jerry B.

Patent Priority Assignee Title
D330171, Mar 29 1990 Sensors, Inc. Gas analyzer
D332833, Jul 19 1990 I-Stat Corporation Portable clinical diagnostic instrument
D346753, May 10 1990 ANALYTICAL TECHNOLOGY, INC PH and concentration meter
D347590, Nov 12 1992 TESTOTERM FRITZSCHING GMBH & CO Measuring instrument
D351803, Mar 02 1993 Newport Electronics, Inc. pH pen case design
D362813, Feb 28 1994 Aquarium pump indicator
D392906, Oct 08 1996 Spectronic Instruments, Inc. Spectrophotometer
D611372, Sep 19 2008 Cilag GmbH International; Lifescan IP Holdings, LLC Analyte test meter
D611489, Jul 25 2008 Cilag GmbH International; Lifescan IP Holdings, LLC User interface display for a glucose meter
D611853, Mar 21 2008 Cilag GmbH International; Lifescan IP Holdings, LLC Analyte test meter
D612275, Mar 21 2008 Cilag GmbH International; Lifescan IP Holdings, LLC Analyte test meter
D615431, Mar 21 2008 Cilag GmbH International; Lifescan IP Holdings, LLC Analyte test meter
D788623, Feb 13 2015 ATAGO CO., LTD. pH meter
Patent Priority Assignee Title
2546093,
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Executed onAssignorAssigneeConveyanceFrameReelDoc
Aug 31 1987TROTTMANN, JERRY B HACH COMPANY, LOVELAND, COLORADO A CORP OFASSIGNMENT OF ASSIGNORS INTEREST 0047860786 pdf
Sep 04 1987Hach Company(assignment on the face of the patent)
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