Number | Name | Date | Kind |
---|---|---|---|
2664886 | Coffman | Jan 1954 | |
2832334 | Whitelaw | Apr 1958 | |
3976057 | Barclay | Aug 1976 | |
4474176 | Farris et al. | Oct 1984 | |
4801138 | Airy et al. | Jan 1989 | |
4899735 | Townsend et al. | Feb 1990 | |
5052379 | Airy et al. | Oct 1991 | |
5067479 | Saringer et al. | Nov 1991 | |
5090138 | Borden | Feb 1992 | |
5116296 | Watkins et al. | May 1992 | |
5144943 | Luttrell et al. | Sep 1992 | |
5209715 | Walker et al. | May 1993 | |
5215508 | Bastow | Jun 1993 | |
5277281 | Carlson et al. | Jan 1994 | |
5284330 | Carlson et al. | Feb 1994 | |
5286242 | Johnston | Feb 1994 | |
5297540 | Kaiser et al. | Mar 1994 | |
5337737 | Rubin et al. | Aug 1994 | |
5353839 | Kordonsky et al. | Oct 1994 | |
5382373 | Carlson et al. | Jan 1995 | |
5383826 | Michael | Jan 1995 | |
5398917 | Carlson et al. | Mar 1995 | |
5409435 | Daniels | Apr 1995 | |
5425690 | Chang | Jun 1995 | |
5452745 | Kordonsky et al. | Sep 1995 | |
5454773 | Blanchard et al. | Oct 1995 | |
5460585 | Gentry et al. | Oct 1995 | |
5472410 | Hamersly | Dec 1995 | |
5472412 | Knoth | Dec 1995 | |
5476441 | Durfee et al. | Dec 1995 |
Entry |
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Carlson et al.; MR Fluid Devices and Process of Controlling Force in Exercise Equipment Utilizing Same; S/N--08/304,005. |
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Hammacher Schlemmer Catalog Advertisement; Late Winter 1996. |