Grindstone

- Sanwa Kenma, Ltd.
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Description

FIG. 1 is a perspective view of a grindstone;

FIG. 2 is a front view thereof, the opposite side being an identical image of the side shown herein;

FIG. 3 is a left side view thereof, the opposite side being an identical image of the side shown herein; and,

FIG. 4 is a top view thereof.

The portion shown by broken lines is for illustrative purposes only and forms no part of the claimed design. The dashed lines show a borderline between the claimed design and other portion.

Claims

The ornamental design for a grindstone, as shown and described.

Referenced Cited
U.S. Patent Documents
5373834 December 20, 1994 Chiuminatta et al.
5901629 May 11, 1999 Stroud
D424076 May 2, 2000 Dibbern et al.
D427042 June 27, 2000 Dibbern et al.
Patent History
Patent number: D609545
Type: Grant
Filed: Feb 3, 2009
Date of Patent: Feb 9, 2010
Assignee: Sanwa Kenma, Ltd.
Inventors: Kazuhisa Ueno (Uji), Katsuji Sunagawa (Uji), Izumi Araki (Uji), Eiki Sakaguchi (Uji)
Primary Examiner: Antoine D Davis
Attorney: Gerald E. Hespos
Application Number: 29/331,843
Classifications
Current U.S. Class: D8/70; Element Or Attachment (D15/126)