FR593479A - Tube à décharge à cathode incandescente, ayant une enveloppe consistant partiellement en matière isolante et partiellement en métal
- Google Patents
Tube à décharge à cathode incandescente, ayant une enveloppe consistant partiellement en matière isolante et partiellement en métal
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
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Application filed by Philips Gloeilampenfabrieken NVfiledCriticalPhilips Gloeilampenfabrieken NV
Application grantedgrantedCritical
Publication of FR593479ApublicationCriticalpatent/FR593479A/fr
H01J2235/168—Shielding arrangements against charged particles
FR593479D1924-04-101925-02-17Tube à décharge à cathode incandescente, ayant une enveloppe consistant partiellement en matière isolante et partiellement en métal
ExpiredFR593479A
(fr)