Number | Name | Date | Kind |
---|---|---|---|
3298559 | Lurie | Jan 1967 | |
3340714 | Pohl et al. | Sep 1967 | |
3348995 | Baker et al. | Oct 1967 | |
3382136 | Bugel et al. | May 1968 | |
3542605 | Harvey | Nov 1970 | |
3594249 | Mueller-Tamm et al. | Jul 1971 | |
3616019 | Mueller-Tamm et al. | Oct 1971 | |
3711365 | Pyle | Jan 1973 | |
3721597 | Colburn | Mar 1973 | |
3826628 | Addinoll et al. | Jul 1974 | |
4115619 | Kurfman et al. | Sep 1978 | |
4229504 | Brachman | Oct 1980 |
Number | Date | Country |
---|---|---|
2038239 | Jul 1980 | GBX |
Entry |
---|
Pohl et al., Modern Plastics, 41, Mar. 7, 1964, pp. 119-124._ |