Pipette

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Description

FIG. 1 is a side elevational view of the pipette showing my new design, all side elevations being the same;

FIG. 2 is an end elevational view taken from the left side of FIG. 1;

FIG. 3 is an end elevational view taken from the right side of FIG. 1; and

FIG. 4 is a side elevational view of a modification thereof.

Referenced Cited
U.S. Patent Documents
D228492 October 1973 Choen
D250599 December 19, 1978 St. Amand
3811603 May 1974 Felton
3938392 February 17, 1976 Rodrigues
4054061 October 18, 1977 Valt
Other references
  • Cole-Parmer, Cat. 1979-198, .COPYRGT.1978, p. 278, Item No. #6226, Dropping Pipette.
Patent History
Patent number: D260434
Type: Grant
Filed: Mar 2, 1979
Date of Patent: Aug 25, 1981
Inventor: Elmer F. St. Amand (N. Hollywood, CA)
Primary Examiner: Bernard Ansher
Attorney: John J. Posta, Jr.
Application Number: 6/16,911
Classifications
Current U.S. Class: D24/55; D24/63
International Classification: D2402;