Number | Name | Date | Kind |
---|---|---|---|
1474259 | Heess | Nov 1923 | |
2264169 | Poirier | Nov 1941 | |
2479031 | Tait | Aug 1949 | |
2877693 | Poirier | Mar 1959 | |
2922475 | Alexander | Jan 1960 | |
3024839 | Beachler | Mar 1962 | |
3266975 | Cribben | Aug 1966 | |
4146425 | Gutzeit | Mar 1979 | |
4308077 | Bolton | Dec 1981 | |
4329201 | Bolton | May 1982 | |
4398996 | Bolton | Aug 1983 |
Entry |
---|
Lavigne, "Instrumentation Applications" Miller Freeman Publications, S. F.; 1979 pp. 208-209. |