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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 |
| 4231309 | Rudders for boats, particularly for pleasure boats A boat rudder comprises a rudder-blade hinged in its upper part to a substantially horizontal pin carried by a rudder-blade support, which support is hinged to a substantially vertical pin. The boat rudder further comprises a bar fixed to a bar support th... | 11/04/1980 |
| 4159007 | Traveller device, particularly a sheet rail traveller A device comprising, on the one hand, a slide closed at its ends and, on the other hand, a traveller able to slide in the slide, this traveller not being able to be pulled out of the slide in a direction perpendicular to the sliding direction. The travell... | 06/26/1979 |
