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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 |
| 5143029 | Two cycle internal combustion hydrocycle engine A two-cycle internal combustion engine includes two opposed pistons reciprocatable within a cylinder, between which an air-fuel mixture is injected and ignited. One of the pistons, a compression piston, is connected to a rotatable flywheel for storing ene... | 09/01/1992 |
| 4178885 | Rotary piston/cylinder engines A rotary piston/cylinder engine comprises a rotor assembly which is mounted to rotate about an axis of rotation and comprises a double-headed piston member and a double-headed cylinder member defining two cylinders in which two pistons of the piston membe... | 12/18/1979 |
