Patent
   D321488
Priority
Apr 29 1988
Filed
Apr 29 1988
Issued
Nov 12 1991
Expiry
Nov 12 2005
Assg.orig
Entity
unknown
8
5
n/a
The ornamental design for a colorimeter, as shown.

FIG. 1 is a top plan view of a colorimeter showing our new design;

FIG. 2 is a front elevational view;

FIG. 3 is a right side elevational view;

FIG. 4 is a rear elevational view;

FIG. 5 is a left side elevational view; and

FIG. 6 is a bottom plan view thereof.

Sierra, George H., Summers, Robert B.

Patent Priority Assignee Title
D333630, Jan 16 1990 PALINTEST LTD Instrument for testing liquid samples
D333992, Jan 07 1991 Hach Company Pocket colorimeter
D336444, Feb 21 1990 Hach Company Portable colorimeter
D338417, Jul 26 1991 GRETAGMACBETH, L L C Portable spectrophotometer
D406895, Dec 04 1997 Roche Diabetes Care, Inc Glucose testing instrument
D846415, Jul 12 2017 BYK-Gardner GmbH Colorimeter
D846416, Jul 12 2017 BYK-Gardner GmbH Colorimeter
D846417, Jul 12 2017 BYK-Gardner GmbH Colorimeter
Patent Priority Assignee Title
4552458, Oct 11 1983 CLINICAL DIAGNOSTIC SYSTEMS INC Compact reflectometer
4871258, Apr 29 1988 Roche Diabetes Care, Inc Color test meter
D282644, Jun 08 1983 Miles Laboratories, Inc. Reflectance colorimeter
D292277, Mar 26 1985 MILES INC Reflectance colorimeter
D312621, Feb 29 1988 Arch Development Corporation Portable medical data entry computer
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Executed onAssignorAssigneeConveyanceFrameReelDoc
Apr 29 1988Boehringer Mannheim Corporation(assignment on the face of the patent)
Apr 29 1988SIERRE, GEORGE H BOEHRINGER MANNHEIM CORPORATION, A CORP OF INASSIGNMENT OF ASSIGNORS INTEREST 0048840413 pdf
Apr 29 1988SUMMERS, ROBERT B BOEHRINGER MANNHEIM CORPORATION, A CORP OF INASSIGNMENT OF ASSIGNORS INTEREST 0048840413 pdf
Dec 11 1998Boehringer Mannheim CorporationRoche Diagnostics CorporationCHANGE OF NAME SEE DOCUMENT FOR DETAILS 0097310864 pdf
Jan 01 2004Roche Diagnostics CorporationRoche Diagnostics Operations, IncASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS 0152150061 pdf
Mar 02 2015Roche Diagnostics Operations, IncRoche Diabetes Care, IncASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS 0360080670 pdf
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