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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 |
| 4147454 | Method of and apparatus for construction of pipes for marine use, as for ocean mining and the like The present invention is concerned with methods of and apparatus for constructing cylindrical structures such as large-diameter pipes for the transport of materials in ocean mining and the like, whereby one or more rolls of previously prepared sheet mater... | 04/03/1979 |
| 4037874 | Apparatus for underwater retrieval, selection and concentration of material for ocean mining Underwater mining apparatus employs a rotatable drum having a plurality of rows of digging forks and a plurality of adjacent rows of openings for receiving materials loosened by the forks during rotation of the drum over the ocean bottom. The spacing betw... | 07/26/1977 |
