Colorimeter

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Description

FIG. 1 is a front and top left perspective view of a colorimeter showing my new design;

FIG. 2 is a right side elevational view thereof;

FIG. 3 is a rear elevational view thereof.

Referenced Cited
U.S. Patent Documents
D221994 September 1971 Gemmill
D241042 August 1976 Kupiec
3026182 March 1962 Jankowski
3441352 April 1969 Hughes
3565535 February 1971 Monell
3676007 July 1972 Kiess
Other references
  • Cole-Parmer Cat.-'75-'76-p. 97-colorimeter at top.
Patent History
Patent number: D250810
Type: Grant
Filed: Jun 2, 1977
Date of Patent: Jan 16, 1979
Assignee: The Baltimore Spice Company (Baltimore, MD)
Inventor: David L. Stern (Baltimore, MD)
Primary Examiner: Nelson C. Holtje
Attorney: Lawrence I. Field
Application Number: 5/802,602
Classifications
Current U.S. Class: Measuring, Regulating Or Indicating Instrument, Or Casing (D10/46); Chemical (12) (D10/81)
International Classification: D1004;