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FIG. 1 is a top plan view thereof;

FIG. 2 is a right side elevation view thereof;

FIG. 3 is a rear elevation view thereof; and,

FIG. 4 is a front elevation view thereof.

The broken line illustrations on the keys in the drawing figures are for illustrative purposes only and form no part of the claimed design. The contrast in shading techniques in FIGS. 1–4 represents a color contrast in appearance of these elements and does not represent any specific color, material, or texture.


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

Referenced Cited
U.S. Patent Documents
D307032 April 3, 1990 Sawada et al.
D309623 July 31, 1990 Sawada et al.
D317458 June 11, 1991 Sawada et al.
D368111 March 19, 1996 Komatsu et al.
D377190 January 7, 1997 Matsuda
D383773 September 16, 1997 Tamaki et al.
D408440 April 20, 1999 Matsuda et al.
D438238 February 27, 2001 Chu et al.
D475736 June 10, 2003 Hsu
D501499 February 1, 2005 Matsuda
D533894 December 19, 2006 Chan
Patent History
Patent number: D553670
Type: Grant
Filed: Mar 1, 2007
Date of Patent: Oct 23, 2007
Assignee: FAF GmbH & Co. KG
Inventors: Bernd W. Kloeckner (Berlin), Dirk K. Runzheimer (Koblenz)
Primary Examiner: Robert M. Spear
Assistant Examiner: Garth Rademaker
Attorney: Michael L. Leetzow, P.A.
Application Number: 29/277,575
Current U.S. Class: With Keyboard (D18/7)