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Information
Patent Grant
D307156
References
Source
Patent Number
D307,156
Date Filed
Wednesday, November 25, 1987
37 years ago
Date Issued
Tuesday, April 10, 1990
34 years ago
Inventors
Ray Chen
Original Assignees
Cal-Comp Electronics, Inc.
Examiners
Holtje; Nelson C.
Veynar; Caron D.
Agents
Kenyon & Kenyon
US Classifications
D18 - Printing and office machinery
Field of Search
US
D18 1
D18 2
D18 6
D18 7
D18 11
D18 12
340 365
340 700
364 706-710
Term of Grant
14Years
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Abstract
Description
Claims
The ornamental design for a calculator or similar article, as shown and described.
US Referenced Citations (7)
Number
Name
Date
Kind
D250430
Nishiguchi
Nov 1978
D261398
Hirata et al.
Oct 1981
D273199
Sawada
Mar 1984
D279106
Sawada et al.
Jun 1985
D284869
Kurihara
Jul 1986
D290374
Yubisui et al.
Jun 1987
D294280
Yubisui et al.
Feb 1988