Number | Name | Date | Kind |
---|---|---|---|
4098554 | Huber et al. | Jul 1978 |
Number | Date | Country |
---|---|---|
0036087 | Mar 1977 | JPX |
2102589 | Feb 1983 | GBX |
Entry |
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Rapperport et al., Rev. Sci. Instr., vol. 41, No. 8, Aug. 1970, pp. 1168-1171. |
Perkin--Elmer HGA--500 brochure, Feb. 14, 1979. |