Number | Date | Country | Kind |
---|---|---|---|
2-413977 | Dec 1990 | JPX | |
3-203744 | Jul 1991 | JPX |
Number | Name | Date | Kind |
---|---|---|---|
2588007 | Jaffee | Mar 1952 | |
2819960 | Bomberger | Jan 1958 | |
2829974 | Finlay et al. | Apr 1958 | |
2857269 | Vordahl | Oct 1958 | |
3063835 | Stern | Nov 1962 | |
4666666 | Taki et al. | May 1987 |
Number | Date | Country |
---|---|---|
0006471 | Jan 1980 | JPX |
710584 | Jun 1954 | GBX |
8519 | Jun 1960 | GBX |
Entry |
---|
Froes et al Jour of Metals, Jul. 1985, p. 28. |