Number | Date | Country | Kind |
---|---|---|---|
10189/78 | Sep 1978 | CHX |
Number | Name | Date | Kind |
---|---|---|---|
3488122 | Roussopoulos | Jan 1970 | |
3684378 | Lord | Aug 1972 | |
3780299 | Bock | Dec 1973 |
Number | Date | Country |
---|---|---|
414205 | Dec 1966 | CHX |
873563 | Jul 1961 | GBX |
1356049 | Jun 1974 | GBX |
Entry |
---|
IBM Tech. Disc. Bull., vol. 14, #6, (Nov. 1971), pp. 1868-1869. |