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Levi Roberto

Philips

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Archive | 1952

Thermionic cathode and method of manufacturing same

Levi Roberto; Ray Collier Hughes

Archive | 1954

Method of manufacturing tungsten articles of predetermined shape and dimensions

Levi Roberto

Archive | 1959

Dispenser-type cathode and method of making

Levi Roberto

Archive | 1957

Method of making a dispenser cathode

Levi Roberto

Archive | 1959

Thermionic dispenser cathode

Levi Roberto

Archive | 1964

Method of controlling porosity of refractory metal structures

Levi Roberto; Gary C. Irons

Archive | 1961

Carburization of dispenser cathodes

Levi Roberto

Archive | 1949

Oxide insulating coating for nickel chromium resistance wire

Levi Roberto

Archive | 1959

Method of making thermionic dispenser cathode and cathode made by said method

Levi Roberto

Archive | 1968

POROUS REFRACTORY METAL DEVICES

Levi Roberto; Irons Gary C

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Irons Gary C

Philips

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Gary C. Irons

Philips

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Ray Collier Hughes

Philips

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