Transfer pipette

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Description

FIG. 1 is a top plan view of the transfer pipette showing my new design;

FIG. 2 is a side elevational view of the transfer pipette taken from the bottom of FIG. 1, the other side being a mirror image thereof;

FIG. 3 is an end elevational view taken from the left side of FIG. 2;

FIG. 4 is an end elevational view taken from the right side of FIG. 2; and

FIG. 5 is a transverse section along line 5--5 of FIG. 2.

Referenced Cited
U.S. Patent Documents
D228492 October 1973 Choen
2809773 October 1957 Bender
3811603 May 1974 Felton
3938392 February 17, 1976 Rodrigues
4054061 October 18, 1977 Valt
Other references
  • Fisher Scientific Co., Cat. #65, .COPYRGT. 1964, p. 818, item #13-700-10, Pipet.
Patent History
Patent number: D250599
Type: Grant
Filed: Mar 23, 1977
Date of Patent: Dec 19, 1978
Inventor: Elmer F. St. Amand (North Hollywood, CA)
Primary Examiner: Bernard Ansher
Attorney: Robert E. Geauque
Application Number: 5/780,300
Classifications
Current U.S. Class: D24/55; D24/63; 73/4256; 128/233
International Classification: D2402;