U.S. patent number D313,400 [Application Number 07/085,601] was granted by the patent office on 1991-01-01 for multiple control box for a computer graphics workstation. This patent grant is currently assigned to Digital Equipment Corporation. Invention is credited to Douglas Bushman, John D. Quinn, Brian S. Siart.
United States Patent | D313,400 |
Quinn , et al. | January 1, 1991 |
Inventors: | Quinn; John D. (Hudson, NH), Bushman; Douglas (Houston, TX), Siart; Brian S. (Fitchburg, MA) |
---|---|
Assignee: | Digital Equipment Corporation
(Maynard, MA) |
Appl. No.: | 07/085,601 |
Filed: | August 13, 1987 |
Current U.S. Class: | D14/399 |
Field of Search: | ;D14/100,106,107,114 ;D13/12,32,38 ;D21/48 ;340/700,706,711,712 ;341/22,23 ;178/18,19 ;273/148B ;74/471XY ;200/5A,5R,6A,6R |
D274631 | July 1984 | Smith, III et al. |
D276247 | November 1984 | Kim |
D291806 | September 1987 | Conway et al. |
3479898 | November 1969 | Prager |
4590339 | May 1986 | Scott-Jackson et al. |
Photographs of an Evans & Sutherland, Model No. PS300, Dial Box. . Advertising Brochure of an Evans and Sutherland Model PS390, Graphics Workstation.. |
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