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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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 Philips Gloeilampenfabrieken NVfiledCriticalPhilips Gloeilampenfabrieken NV
Application grantedgrantedCritical
Publication of FR769360ApublicationCriticalpatent/FR769360A/fr
H01J19/00—Details of vacuum tubes of the types covered by group H01J21/00
H—ELECTRICITY
H01—ELECTRIC ELEMENTS
H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
H01J2893/00—Discharge tubes and lamps
H01J2893/0001—Electrodes and electrode systems suitable for discharge tubes or lamps
H01J2893/0012—Constructional arrangements
H01J2893/0019—Chemical composition and manufacture
H01J2893/0022—Manufacture
FR769360D1933-03-221934-02-26Procédé de fabrication d'organes en fils pour tubes à décharges ou lampes à incandescence électriques
ExpiredFR769360A
(fr)
Procédé de fabrication de récipients fermant de facon étanche à l'air, plus particulièrement pour la fabrication de tubes à décharge électrique ou de lampes électriques à incandescence