"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."
|7911120||Source for providing an electron beam of settable power|
The invention concerns a source supplying an adjustable energy electron beam, comprising a plasma chamber (P) consisting of an enclosure (1) having an inner surface of a first value (S1) and an extraction gate (2) having a surface of a secon...
|7585421||Method of producing a sheet comprising through pores and the application thereof in the production of micronic and submicronic filters|
The method comprises the following steps: preparing a sheet having thickness of 5 μm to a few tens of micrometers, suitable for being etched by a lithographic operation; making a mask on a face of the sheet, the m...
|7574974||Device for production of a plasma sheet|
The invention relates to a device for the production of a plasma (16) within a housing comprising means for the generation of energy in the microwave spectrum, for the excitation of the plasma, said means comprise at least one basic plasma excitation device w...
|7304435||Device for confinement of a plasma within a volume|
A device of a plasma (5) for confinement of a plasma within a housing (1), comprising creation means for creating a magnetic field, said means being a series of permanent magnets (3) for creation of a magnetic field presenting an alternating mul...
|6727656||Power splitter for plasma device|
The invention concerns a system including a microwave generator and a rectangular guide connected with the generator. The system is adapted to operate in fundamental (H10) or transverse electrical (TE10) mode, and associated with means providin...