Periodontal instrument

Description

FIG. 1 is a side elevational view of a periodontal instrument showing our new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a bottom plan view thereof;

FIG. 4 is a top plan view thereof;

FIG. 5 is a side elevational view of a second embodiment thereof;

FIG. 6 is a front elevational view thereof;

FIG. 7 is a bottom plan view thereof;

FIG. 8 is a rear elevational view of the first embodiment thereof; and,

FIG. 9 is a rear elevational view of a second embodiment thereof.

The top plan view of the second embodiment is identical to the top plan view of the original embodiment as shown in FIG. 4.

Referenced Cited
U.S. Patent Documents
D322314 December 10, 1991 Ohbayashi
3164153 January 1965 Zorzi
3490657 January 1970 Williams et al.
3561433 February 1971 Kovach
3757419 September 1973 Hopkins
3841311 October 1974 Brown
4219619 August 26, 1980 Zarow
4411623 October 25, 1983 Axelsson
4880382 November 14, 1989 Moret et al.
4941459 July 17, 1990 Mathur
4958751 September 25, 1990 Curtis et al.
Foreign Patent Documents
1319051 April 1962 FRX
Patent History
Patent number: D340521
Type: Grant
Filed: Apr 9, 1990
Date of Patent: Oct 19, 1993
Assignee: Colgate-Palmolive Company (New York, NY)
Inventors: Bert D. Heinzelman (Tenafly, NJ), Paul D. Cesare (Norwalk, CT)
Primary Examiner: Wallace R. Burke
Assistant Examiner: M. H. Tung
Attorneys: Michael J. McGreal, Robert C. Sullivan
Application Number: 7/507,056