Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ELECTRICITAETS AG
Ver Gluehlampen & Elec AG
Original Assignee
ELECTRICITAETS AG
Ver Gluehlampen & Elec AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by ELECTRICITAETS AG, Ver Gluehlampen & Elec AGfiledCriticalELECTRICITAETS AG
Application grantedgrantedCritical
Publication of DE551533CpublicationCriticalpatent/DE551533C/de
H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
H01J9/02—Manufacture of electrodes or electrode systems
H01J9/04—Manufacture of electrodes or electrode systems of thermionic cathodes
H01J9/042—Manufacture, activation of the emissive part
Landscapes
Engineering & Computer Science
(AREA)
Manufacturing & Machinery
(AREA)
Solid Thermionic Cathode
(AREA)
DEV25191D1928-06-081929-04-20Verfahren zur Herstellung von Gluehkathoden
ExpiredDE551533C
(de)
Verfahren zum UEberziehen von festen metallischen Strahlungskoerpern elektrischer Vakuumgefaesse mit schwer Schmelzbaren Metallen oder Metallverbindungen
Verfahren zur Herstellung einer metallischen Zwischenschicht aus Silber zwischen einer Unterlage aus hochschmelzenden Metallen und einer emittierenden Oberflaeche fuer ueberzogene Gluehkathoden