Number | Name | Date | Kind |
---|---|---|---|
2706409 | Preston | Apr 1955 | |
3997249 | Wittig | Aug 1976 | |
4559836 | Coleman et al. | Dec 1985 | |
4754651 | Shortridge et al. | Jul 1988 | |
4957007 | Gray | Sep 1990 | |
5036711 | Good | Aug 1991 |
Number | Date | Country |
---|---|---|
2231667 | Nov 1990 | GBX |
Entry |
---|
Technisches Messen Tm, Vol. 48, No. 6, Jun. 1981, Munchen De, pp. 229-232, J. Wachter, E. A., "Automatischer Nullabgleich For Stromungssonden". |
Appendix A, Methods 1 and 2 of 40 Code of Federal Regulations, Part 60, Jul. 1, 1992. |