| Number | Name | Date | Kind |
|---|---|---|---|
| 472086 | Town | Apr 1892 | |
| 572465 | Woolfolk et al. | Dec 1896 | |
| 657133 | Redick | Sep 1900 | |
| 811167 | Paddock | Jan 1906 | |
| 933610 | Yanowsky | Sep 1909 | |
| 934625 | Petrel | Sep 1909 | |
| 1006862 | McCormick | Oct 1911 | |
| 1006863 | McCormick | Oct 1911 | |
| 1565808 | Levy | Dec 1925 | |
| 1983636 | Palkens | Dec 1934 | |
| 2104699 | O'Dell | Jan 1938 | |
| 2840822 | Ericsson | Jul 1958 | |
| 3116735 | Geimer | Jan 1964 | |
| 3554190 | Kaplan | Jan 1971 | |
| 4782535 | Yewer, Jr. et al. | Nov 1988 | |
| 4866789 | Dorm | Sep 1989 | |
| 4981307 | Walsh | Jan 1991 | |
| 5007412 | DeWall | Apr 1991 | |
| 5040524 | Votel et al. | Aug 1991 |
| Number | Date | Country |
|---|---|---|
| 0055238 | Jun 1982 | EPX |
| Entry |
|---|
| CompVest Back Support Brochure, 1984 of Comp Equipment Corporation (now known as Ergodyne Corporation). |