Number | Name | Date | Kind |
---|---|---|---|
2116160 | Rosenberger et al. | May 1938 | |
2351453 | Pearl | Jun 1944 | |
2996846 | Leliaert | Aug 1961 | |
3298138 | McCormick, Jr. | Jan 1967 | |
4030247 | Grund | Jun 1977 | |
4089138 | Thomson | May 1978 | |
4355488 | Schmitz et al. | Oct 1982 | |
4524548 | Klee | Jun 1985 | |
4646484 | Brull | Mar 1987 |
Number | Date | Country |
---|---|---|
0102756 | Jun 1982 | JPX |
Entry |
---|
Cryogenic Information Report of May, 1987, p. 23 with abstracts. |