Number | Date | Country | Kind |
---|---|---|---|
3025596 | Jul 1980 | DEX |
Number | Name | Date | Kind |
---|---|---|---|
2246078 | Rohn et al. | Jun 1941 | |
3463192 | Herion, Jr. | Aug 1969 | |
3921659 | Rudewick | Nov 1975 | |
4292997 | Bernat | Oct 1981 |
Number | Date | Country |
---|---|---|
19335 | May 1980 | EPX |
1282377 | Nov 1968 | DEX |
1291957 | Apr 1969 | DEX |
1771504 | Sep 1972 | DEX |
2549652 | May 1977 | DEX |
2744700 | Apr 1979 | DEX |
1454755 | Oct 1966 | FRX |
2445305 | Jul 1980 | FRX |
1401371 | Jul 1975 | GBX |
Entry |
---|
Hove and Riley, Modern Ceramics, John Wiley and Sons, Inc., 1965, pp. 357-358. |
Ryshkewitch; Eugene, Oxide Ceramics, Academic Press, 1960, pp. 350, 351, 369-370, 388-391. |