Number | Date | Country | Kind |
---|---|---|---|
8004959 | Aug 1980 | NLX |
Number | Name | Date | Kind |
---|---|---|---|
2715075 | Wolinski | Aug 1955 | |
3187069 | Pincus et al. | Jun 1965 | |
3426110 | Kesling | Feb 1969 | |
3527667 | Larsen et al. | Sep 1970 | |
3607987 | Walton et al. | Sep 1971 | |
3639189 | Hartman | Feb 1972 | |
3923937 | Piccioli et al. | Dec 1975 | |
3936565 | Good | Feb 1976 | |
3995984 | Fetherston et al. | Dec 1976 | |
4104335 | Allen | Aug 1978 | |
4158686 | Boeckmann | Jun 1979 | |
4167382 | Freedman | Sep 1979 | |
4255221 | Young | Mar 1981 | |
4307133 | Haselier | Dec 1981 |
Number | Date | Country |
---|---|---|
251057 | Jan 1963 | AUX |
714619 | Jul 1965 | CAX |
2617357 | Nov 1976 | DEX |
1494897 | Dec 1977 | GBX |
1532629 | Nov 1978 | GBX |
Entry |
---|
35 Plastics Engineering, Oct. 1979, pp. 1, 47-49. |
9 Encycl. Poly. Sci. Tech., pp. 1, 118-137 (1968). |