| Number | Name | Date | Kind |
|---|---|---|---|
| 2303267 | Goodwin | Nov 1942 | |
| 2389481 | Bazner | Nov 1945 | |
| 2433737 | Chernow | Dec 1947 | |
| 2516652 | Silverman | Jul 1950 | |
| 2618831 | Gloss | Nov 1952 | |
| 2745264 | Jaron | May 1956 | |
| 2773293 | Watson | Dec 1956 | |
| 3465542 | Pintarelli | Sep 1969 | |
| 3483715 | Kettell | Dec 1969 | |
| 3568271 | Saccoccio et al. | Mar 1971 | |
| 4187696 | Van Bergen | Feb 1980 | |
| 5170644 | Calabro | Dec 1992 |
| Number | Date | Country |
|---|---|---|
| 264642 | Sep 1964 | AUX |
| 245844 | Mar 1966 | ATX |
| 1156805 | May 1958 | FRX |
| 1166757 | Nov 1958 | FRX |
| 1476796 | Apr 1967 | FRX |
| 692625 | Aug 1965 | ITX |
| 284160 | Nov 1952 | CHX |
| 598208 | Feb 1948 | GBX |
| 976341 | Nov 1964 | GBX |
| Entry |
|---|
| Ballou brochure, Jul., 1991, pp. 21, 29, 30, 31. |
| American Jewelry Manufacturer, Mar., 1994. |