| Number | Name | Date | Kind |
|---|---|---|---|
| 2994984 | Luchsinger | Aug 1961 | |
| 3098316 | McCarthy | Jul 1963 | |
| 3532340 | Nardiello | Oct 1970 | |
| 3541161 | Lemelson | Jun 1969 | |
| 3626633 | Meyer | Dec 1971 | |
| 3868786 | Lippe et al. | Mar 1975 | |
| 4531923 | Lohr | Jul 1985 | |
| 4715839 | Ford et al. | Dec 1987 |
| Number | Date | Country |
|---|---|---|
| 521438 | Feb 1956 | CAX |
| 2155813 | Nov 1971 | DEX |
| 3201438 | Jul 1983 | DEX |
| 2029246 | Mar 1980 | GBX |
| 2123704 | Feb 1984 | GBX |
| Entry |
|---|
| "Space Trix", Fishlore & Co., Chicago, IL, Mar., 1965. |
| "Rubber Magnet", Mayer Studios, Inc., Akron, Oh., 1950. |
| "Plastics that Glow", Modern Plastics, Oct., 1948. |