| Number | Name | Date | Kind |
|---|---|---|---|
| 1401056 | Doyle | Dec 1921 | |
| 1596113 | Monroe | Aug 1926 | |
| 1924016 | Barrows | Aug 1933 | |
| 2282021 | Benningfield | May 1942 | |
| 2418009 | Berman | Mar 1947 | |
| 3096760 | Nelkin | Jul 1963 | |
| 3393675 | Lrznadel et al. | Jul 1968 | |
| 3441027 | Lehman | Apr 1969 | |
| 3452748 | Caprio | Jul 1969 | |
| 3521623 | Nichols et al. | Jul 1970 | |
| 3561434 | Kilbey | Feb 1971 | |
| 3926183 | Spiro | Dec 1975 | |
| 4022197 | Castiglia | May 1977 | |
| 4135503 | Romano | Jan 1979 | |
| 4175553 | Rosenberg | Nov 1979 | |
| 4245628 | Eichler | Jan 1981 | |
| 4269179 | Burton | May 1981 | |
| 4993409 | Grim | Feb 1991 |
| Entry |
|---|
| Pro Flex Brochure; CR 1988; Ergodyne Corp.; St. Paul, Minn. |
| Physical Therapy; vol. 71, No. 6, p. 143; Jun. 1991. |
| Orthopedic Product Catalog; D. Smith Truss Co.; Topeka, Kans., CR 1990. |