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