Number | Date | Country | Kind |
---|---|---|---|
430349 | Jun 1983 | CAX |
Number | Name | Date | Kind |
---|---|---|---|
3230957 | Seifert | Jan 1966 | |
3263052 | Jeppson et al. | Jul 1966 | |
3829649 | Igarashi | Aug 1974 | |
3980855 | Boudouris et al. | Sep 1976 | |
3988036 | Fisher et al. | Oct 1976 | |
4208562 | Perreault | Jun 1980 | |
4217477 | Matsubara et al. | Aug 1980 | |
4221948 | Jean | Sep 1980 | |
4370534 | Brandon | Jan 1983 | |
4370535 | Noda | Jan 1983 | |
4399341 | Yasuoka | Aug 1983 |
Number | Date | Country |
---|---|---|
1044331 | Dec 1978 | CAX |
927901 | May 1982 | SUX |
Entry |
---|
"Review of Thawtron.TM. Device for Thawing Frozen Coal," Mar. 1982, prepared by SRI Intl., Menlo Park, CA; Principal Investigators W. A. Edson and G. E. Tallmadge. |