Number | Name | Date | Kind |
---|---|---|---|
2469165 | Hillier | May 1949 | |
2637000 | Page | Apr 1953 | |
2859363 | Leisegang et al. | Nov 1958 | |
3736423 | Katagiri et al. | May 1973 | |
3812365 | Le Poole | May 1974 |
Entry |
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"A New Concept of Superimposed Deflection and Projection for Probe-forming Electron-Beam Systems", Pfeiffer, Eighth International Congress of Electron Microscopy, CanBerra, 1974 vol. 1, pp. 56-57. |