"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 |
| 4713500 | Electric bypass switch An electric bypass switch for connecting and disconnecting an electric apparatus such as a voltage regulator with respect to a power system includes a pair of spaced insulators on each of which a pair of conductive terminals are mounted, one pair of termi... | 12/15/1987 |
| 4315122 | Contact arrangement The present invention concerns a contact arrangement with a first contact and a second contact. The second contact has two contact members between which the first contact is received. A contact support resiliently supports one of the first and second cont... | 02/09/1982 |