Plunger operated pipette

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Description

FIG. 1 is a perspective view of a plunger operated pipette showing my new design;

FIG. 2 is a side elevational view thereof; _

FIG. 3 is a left end elevational view thereof; and

FIG. 4 is a right end elevational view thereof.

Referenced Cited
U.S. Patent Documents
2172575 September 1939 Caulfield
2533726 December 1950 Floyd
Patent History
Patent number: D257567
Type: Grant
Filed: May 3, 1978
Date of Patent: Nov 25, 1980
Assignee: Disposable Plastics Corporation (Hallandale, FL)
Inventor: Billy H. Peacock (Hollywood, FL)
Primary Examiner: Sam Rosen
Attorney: David E. Brook
Application Number: 5/902,322
Classifications
Current U.S. Class: D24/55
International Classification: D2404;