Number | Date | Country | Kind |
---|---|---|---|
52-42436 | Apr 1977 | JPX |
Number | Name | Date | Kind |
---|---|---|---|
2452529 | Snoek | Oct 1948 | |
2807676 | Lynn | Sep 1957 | |
2809237 | Bergman | Oct 1957 | |
2992474 | Adams | Jul 1961 | |
3175049 | Gabor | Mar 1965 | |
3192608 | Rinia | Jul 1965 |
Entry |
---|
Magnetic Materials, F. Brailsford, John Wiley and Sons, 1948, (dated 1962), p. 12. |