Number | Name | Date | Kind |
---|---|---|---|
705250 | King | Jul 1902 | |
1547196 | Arbon | Jul 1925 | |
1580877 | Barber | Apr 1926 | |
1754310 | Ellenberger | Apr 1930 | |
1926175 | Richards | Sep 1933 | |
2048398 | Lasker | Jul 1936 | |
2464458 | Newcomer | Mar 1949 | |
3206998 | Matz, Jr. et al. | Sep 1965 | |
3208300 | Morse | Sep 1965 | |
3307421 | Gilmore | Mar 1967 | |
3550469 | Morse | Dec 1970 | |
3766801 | Wiegand | Oct 1973 | |
3774568 | Borst et al. | Nov 1973 | |
4014281 | Hemens | Mar 1977 |
Number | Date | Country |
---|---|---|
460773 | Jun 1928 | DE2 |
792486 | Dec 1935 | FRX |
1004247 | Mar 1952 | FRX |
28650 | Oct 1902 | GBX |
Entry |
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Greenburg et al., Inexpensive Cryogenic Pressure-Vacuum Valve, 1/1978. |