Ergonomic putty knife

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Description

FIG. 1 is a rear, left side perspective view of the ergonomic putty knife of the invention;

FIG. 2 is a front, right side perspective view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a front elevational view thereof;

FIG. 5 is a right side elevational view thereof;

FIG. 6 is a left side elevational view thereof;

FIG. 7 is a top plan view thereof;

FIG. 8 is a bottom plan view thereof; and

FIG. 9 is a top perspective view thereof.

Referenced Cited
U.S. Patent Documents
D143046 November 1945 Storm
D182827 May 1958 Latham
D234839 April 1975 Culling et al.
D268085 March 1, 1983 Brunson et al.
2795982 June 1957 Mathias
Other references
  • Techni-Tool, Inc. Cat #16, .COPYRGT.1970, p. 81, Spatula #8. Buffalo/Novocol/Laclede, Cat. #109, publ. 1986, p. 51. Henry Schein, Inc., Fall '86-Winter '87 Cat., p. 184. Spencer Mead Dental, Inc., Winter '85-'86 Cat., p. 181.
Patent History
Patent number: D312379
Type: Grant
Filed: Oct 22, 1986
Date of Patent: Nov 27, 1990
Inventor: Salvador S. M. Casab (Mexico D.F.)
Primary Examiner: Bruce W. Dunkins
Assistant Examiner: Clare E. Heflin
Law Firm: Silverman, Cass & Singer, Ltd.
Application Number: 6/922,134
Classifications
Current U.S. Class: D 8/98; D/8107