Number | Name | Date | Kind |
---|---|---|---|
2474271 | Meyer | Jun 1949 | |
2773196 | Hall | Dec 1956 | |
2983354 | Ember et al. | May 1961 | |
3130315 | Hamermesh et al. | Apr 1964 | |
3146349 | Jordan | Aug 1964 | |
3171961 | Yule | Mar 1965 | |
3255352 | Johnston | Mar 1965 | |
3257558 | Cook et al. | Jun 1966 | |
3295651 | Klackowski et al. | Jan 1967 | |
3308296 | Cowan et al. | Mar 1967 | |
3515871 | Johnson, Jr. et al. | Jun 1970 | |
3654464 | Johnson, Jr. et al. | Apr 1972 | |
3772200 | Livesay | Nov 1973 | |
3780294 | Sowerby | Dec 1973 | |
3818226 | Strindehag | Jun 1974 | |
4019053 | Levine | Apr 1977 |
Number | Date | Country |
---|---|---|
1261790 | Feb 1968 | DEX |
Entry |
---|
Coding Documents by Trace Element Inclusion, IBM Technical Disclosure Bulletin, vol. 11, No. 11, p. 1394 (Apr., 1969). |