Number | Date | Country | Kind |
---|---|---|---|
79 06105 | Mar 1979 | FRX |
Number | Name | Date | Kind |
---|---|---|---|
4122408 | Walls | Oct 1978 |
Entry |
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Walls, "Design and Results From a Prototype Passive Hydrogen Maser Frequency Standard", Proceedings of P.T.T.I., 1976, pp. 369-380. |
Walls et al. "A New Kind of Passively Operating Hydrogen Frequency Standard", Proc. 30th Annual Symposium on Frequency Control, 2-4 Jun. 1976, pp. 473-480. |