Number | Date | Country | Kind |
---|---|---|---|
81 12279 | Jun 1981 | FRX |
Number | Name | Date | Kind |
---|---|---|---|
3327584 | Kissinger | Jun 1967 | |
3771873 | Tourret | Nov 1973 | |
3778157 | Brelot et al. | Dec 1973 | |
3792928 | Poilleux | Feb 1974 | |
4247764 | Kissinger | Jan 1981 | |
4373805 | Mallison | Feb 1983 |
Number | Date | Country |
---|---|---|
2399000 | Feb 1979 | FRX |
Entry |
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Advances in Test Measurement, vol. 5, Proceedings of the 5th Annual ISA Test Measurement Symposium, N.Y., Oct. 28-31, 1968, Instr. Soc. of Am. Pittsburgh (US) R. B. Zipin: "Non-Contact Optical Fiducial" pp. 68-547; 1-5, FIGS. 1, 2, 3. |