Syringe plunger

- Ultradent Products, Inc.
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Description

FIG. 1 is a perspective view of a syringe plunger, showing my new design, the broken line showing of the barrel is for illustrative purposes only and forms no part of the claimed design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a rear elevational view thereof; and

FIG. 5 is a bottom plan view thereof.

Referenced Cited
U.S. Patent Documents
2575425 November 1951 Nelson
2812763 November 1957 Ferguson
3026872 March 1962 Prater, Jr.
3255752 June 1966 Dick
3277894 October 1966 Alexander
3306291 February 1967 Burke
3656480 April 1972 Rubricius
3738539 June 1973 Belch
3766918 October 1973 Kessel
4201209 May 6, 1980 LeVeen
4645488 February 24, 1987 Matukas
4708270 November 24, 1987 Ruesch
Patent History
Patent number: D322317
Type: Grant
Filed: Jun 22, 1989
Date of Patent: Dec 10, 1991
Assignee: Ultradent Products, Inc. (Salt Lake City, UT)
Inventor: Dan E. Fischer (Sandy, UT)
Primary Examiner: Stella Reid
Law Firm: Workman, Nydegger & Jensen
Application Number: 7/370,390