Number | Name | Date | Kind |
---|---|---|---|
1714029 | Kuhn | May 1929 | |
2061936 | Engelfried | Nov 1936 | |
3390459 | Seidenberg | Jul 1968 | |
3721439 | Rudolph et al. | Mar 1973 | |
4244688 | Kurz | Jan 1981 | |
4348178 | Kurz | Sep 1982 | |
4637379 | Saringer | Jan 1987 | |
4700695 | Davis et al. | Oct 1987 |
Entry |
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"An Appliance for Maxillo-Facial Mechanotherapy", Linet, Dental Cosmos, 1917, pp. 693-694. |