U.S. patent number D371,474 [Application Number D/036,068] was granted by the patent office on 1996-07-09 for ergonomic arm support for a chair. This patent grant is currently assigned to Grahl Industries, Inc.. Invention is credited to Karl-Heinz Koopman.
United States Patent | D371,474 |
Koopman | July 9, 1996 |
Inventors: | Koopman; Karl-Heinz (Steyerberg, DE) |
---|---|
Assignee: | Grahl Industries, Inc.
(Coldwater, MI) |
Appl. No.: | D/036,068 |
Filed: | March 13, 1995 |
Current U.S. Class: | D6/716.2; D6/366 |
Field of Search: | ;D6/366,334,375-380,500,501,502 ;297/411.35,411.36,411.37,411.23,411.24,411.26,411.28 ;248/118,118.3 |
D211461 | June 1968 | Walkinshaw |
D277916 | March 1985 | Aronowitz et al. |
D288872 | March 1987 | Schultz |
D329770 | September 1992 | Grahl et al. |
766484 | August 1904 | Armstrong |
1527754 | February 1925 | Simon |
2708899 | May 1955 | Rudolph |
5382079 | January 1995 | Wilson et al. |
Interiors, Apr. 1976, p. 7 See circled chair armrest, right center-Desk copy. . Steelcase, "Criterion. The chair that works hard . . . " (pre Jan. 1991). . Grahl, "The Innovative Company in Ergonomics" (1991). . Neutral Posture Ergonomics (May 1991). . The Chair Works, "An engineering Solution . . . " (pre Jan. 1992).. |
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