U.S. patent number D276,575 [Application Number 06/192,143] was granted by the patent office on 1984-12-04 for chair. This patent grant is currently assigned to Haworth Mfg., Inc.. Invention is credited to Charles D. Helmholdt.
United States Patent | D276,575 |
Helmholdt | December 4, 1984 |
Inventors: | Helmholdt; Charles D. (Caledonia Township, Kent County, MI) |
---|---|
Assignee: | Haworth Mfg., Inc. (Holland,
MI) |
Appl. No.: | 06/192,143 |
Filed: | September 29, 1980 |
Current U.S. Class: | D6/366 |
Field of Search: | ;D6/20,26,30,31 |
D256740 | September 1980 | Acton |
Steelcase Brochure entitled "Concentrx Plus". . Steelcase Brochure entitled "Concentrx/454"-pp. 1-12. . Design Catalog, 9-1976, p. 35, Chair top right, Hunting & Grandjean Adv. . Arbitare, May 1979, p. 51, Chair bottom right.. |
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