Number | Name | Date | Kind |
---|---|---|---|
3280855 | Magers, Jr. | Oct 1966 | |
4372350 | Schmidt et al. | Feb 1983 | |
4524656 | Del Fabro et al. | Jun 1985 | |
5271436 | Pfender et al. | Dec 1993 |
Number | Date | Country |
---|---|---|
2363369 | Jun 1975 | DEX |
3422661 | Dec 1985 | DEX |
1413143 | Nov 1975 | GBX |
Entry |
---|
Soviet Inventions Illustrated, week 8434, Oct. 3, 1984, Derwent Publications Ltd, London GB & Su-A-1065066. |
Soviet Inventions Illustrated, week 9006, Mar. 21, 1940, Derwent Publications Ltd, London GB & Su-A-1496885. |