Diamond file

Description

FIG. 1 is a top perspective view of a diamond file showing our new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a bottom plan view thereof;

FIG. 4 is a front 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 left side elevational view thereof.

Referenced Cited
U.S. Patent Documents
D60007 December 1921 Baldwin
D242896 January 4, 1977 Poliquin
1466391 August 1923 Eskew et al.
1631212 June 1927 King
4683898 August 4, 1987 Lojovich
Patent History
Patent number: D310473
Type: Grant
Filed: Oct 2, 1987
Date of Patent: Sep 11, 1990
Assignee: Ryoki Ltd. (Hiroshima)
Inventors: Yasuharu Takeda (Tokyo), Yutaka Kanamaru (Tokyo)
Primary Examiner: Bruce W. Dunkins
Assistant Examiner: Clare E. Heflin
Law Firm: Sughrue, Mion, Zinn, Macpeak & Seas
Application Number: 7/103,973
Classifications
Current U.S. Class: D 8/90; File, Abrasive Holder Or Polisher (D28/59)