Number | Date | Country | Kind |
---|---|---|---|
2720636 | May 1977 | DEX |
Number | Name | Date | Kind |
---|---|---|---|
3781910 | Herrmann | Dec 1973 | |
3904880 | Benz et al. | Sep 1975 | |
4154087 | Schunk et al. | May 1979 |
Entry |
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Turnbull, M.S. "Non-Dispersive Infra-Red Gas Analysers" Electronics and Instrumentation (Mar. 1972) vol. 2, No. 12, pp. 11-15. |