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"Transmission of documents via telephone wires is possible in principle, but the apparatus required is so expensive that it will never become a practical proposition."
Dennis Gabor, British physicist
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| Number | Title | Issue Date |
| 7170611 | Methods and apparatus for splitting, imaging, and measuring wavefronts in interferometry Apparatus for splitting, imaging, and measuring wavefronts with a reference wavefront and an object wavefront. A wavefront-combining element receives and combines into a combined wavefront an object wavefront from an object and a reference wavefront. A wavefront-spl... | 01/30/2007 |
| 4779110 | Wet film cassette and transport system A wet film cassette and transport system for photographic diffusion transfer films having initially separate wet and dry film components. At least the wet component is contained in a tightly sealed enclosure defined by a cassette having inner and outer, r... | 10/18/1988 |
