GB492025A - Improved method of manufacturing secondary-emission electrodes - Google Patents

Improved method of manufacturing secondary-emission electrodes

Info

Publication number
GB492025A
GB492025A GB9752/38A GB975238A GB492025A GB 492025 A GB492025 A GB 492025A GB 9752/38 A GB9752/38 A GB 9752/38A GB 975238 A GB975238 A GB 975238A GB 492025 A GB492025 A GB 492025A
Authority
GB
United Kingdom
Prior art keywords
improved method
emission electrodes
manufacturing secondary
electrodes
gloeilampenfabrieken
Prior art date
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.)
Expired
Application number
GB9752/38A
Other languages
English (en)
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 NV filed Critical Philips Gloeilampenfabrieken NV
Publication of GB492025A publication Critical patent/GB492025A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • 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
    • H01J9/12—Manufacture of electrodes or electrode systems of photo-emissive cathodes; of secondary-emission electrodes
    • H01J9/125—Manufacture of electrodes or electrode systems of photo-emissive cathodes; of secondary-emission electrodes of secondary emission electrodes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2201/00—Electrodes common to discharge tubes
    • H01J2201/32—Secondary emission electrodes

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Cold Cathode And The Manufacture (AREA)
  • Discharge Lamp (AREA)
GB9752/38A 1937-04-02 1938-03-30 Improved method of manufacturing secondary-emission electrodes Expired GB492025A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL207265X 1937-04-02

Publications (1)

Publication Number Publication Date
GB492025A true GB492025A (en) 1938-09-13

Family

ID=19778619

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9752/38A Expired GB492025A (en) 1937-04-02 1938-03-30 Improved method of manufacturing secondary-emission electrodes

Country Status (6)

Country Link
US (1) US2190695A (enEXAMPLES)
BE (1) BE427303A (enEXAMPLES)
CH (1) CH207265A (enEXAMPLES)
FR (1) FR836016A (enEXAMPLES)
GB (1) GB492025A (enEXAMPLES)
NL (1) NL50264C (enEXAMPLES)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2530167A (en) * 1944-12-14 1950-11-14 Hartford Nat Bank & Trust Co Discharge tube

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2637002A (en) * 1953-04-28 Television pickup tube
NL59008C (enEXAMPLES) * 1941-07-03
GB1200899A (en) * 1967-04-21 1970-08-05 Mullard Ltd Improvements in or relating to photocathodes

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2530167A (en) * 1944-12-14 1950-11-14 Hartford Nat Bank & Trust Co Discharge tube

Also Published As

Publication number Publication date
BE427303A (enEXAMPLES)
FR836016A (fr) 1939-01-09
NL50264C (enEXAMPLES)
CH207265A (de) 1939-10-15
US2190695A (en) 1940-02-20

Similar Documents

Publication Publication Date Title
GB554828A (en) Improvements in or relating to electric discharge tubes having a directional electron beam
GB492025A (en) Improved method of manufacturing secondary-emission electrodes
GB441250A (en) Improvements in and relating to oxide coated cathodes for gaseous electric discharge devices
GB534343A (en) Improvements in and relating to photo-sensitive electrode structures
GB503211A (en) Improvements in or relating to secondary electron multipliers
GB496556A (en) Improvements in electrodes for electron discharge devices
GB449230A (en) Improvements in or relating to electrodes having photo-electric emission properties
GB553181A (en) Improvements in or relating to electric discharge tubes with deflection control
GB522774A (en) Improvements in or relating to methods of manufacturing secondary emitting electrodes
GB479733A (en) Improvements in or relating to the manufacture of activated electrodes for photo-electric cells or secondary electron multipliers
GB552612A (en) Improvements in or relating to cathode-ray tubes
GB517743A (en) Improvements in electric discharge tubes comprising secondaryemission electrodes
GB495674A (en) Improvements in and relating to photo-electric cells
GB356395A (en) Improvements relating to photo-electric cells
GB549992A (en) Improvements in or relating to incandescent cathodes for use in gas or vapour filled discharge tubes
GB362838A (en) Improvements in or relating to photo-electric cells
GB426389A (en) Improvements in or relating to photo-electric cells
GB702824A (en) Improvements relating to the manufacture of electrodes which are sensitised so as tobe emitters of photo-electrons or secondary electrons
GB517643A (en) Improvements in electric discharge tubes utilising secondary emission
GB477262A (en) Improvements in or relating to electric discharge tubes comprising secondary-emission electrodes
GB211825A (en) Improvements in or relating to electric discharge-tubes with a glow cathode
GB498566A (en) Improvements in electron multipliers
GB489923A (en) Improvements in or relating to electric discharge tubes
GB373867A (en) Improvements in or relating to photo-electric cells
GB269341A (en) Improvements in or relating to the manufacture of oxide cathodes for discharge tubes