Ceiling tile knife

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Description

FIG. 1 is a perspective view of a ceiling tile knife showing our new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a left side elevational view thereof;

FIG. 5 is a right side elevational view thereof;

FIG. 6 is a rear elevational view thereof; and,

FIG. 7 is a bottom plan view thereof.

Referenced Cited
U.S. Patent Documents
D249325 September 12, 1978 Rollband
D290333 June 16, 1987 Pashley
D293202 December 15, 1987 West et al.
D296297 June 21, 1988 Weimann et al.
D310474 September 11, 1990 Bartsch et al.
D310475 September 11, 1990 Weimann
2784489 March 1957 Reise
3943627 March 16, 1976 Stanley, Jr.
4109380 August 29, 1978 Anderson
4509260 April 9, 1985 Gringer
4578865 April 1, 1986 Keller
Patent History
Patent number: D332737
Type: Grant
Filed: Oct 5, 1989
Date of Patent: Jan 26, 1993
Inventors: Wayne E. Wentworth (Sandy Hook, CT), Betty Wentworth (Sandy Hook, CT)
Primary Examiner: Bernard Ansher
Assistant Examiner: P. Hyder
Attorney: Terry M. Gernstein
Application Number: 7/417,816
Classifications
Current U.S. Class: D 8/98