GB415373A - Improvements in or relating to negative electric resistances - Google Patents

Improvements in or relating to negative electric resistances

Info

Publication number
GB415373A
GB415373A GB32777/32A GB3277732A GB415373A GB 415373 A GB415373 A GB 415373A GB 32777/32 A GB32777/32 A GB 32777/32A GB 3277732 A GB3277732 A GB 3277732A GB 415373 A GB415373 A GB 415373A
Authority
GB
United Kingdom
Prior art keywords
electrode
tube
ferrochrome
amplifying
sealed
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
GB32777/32A
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
Priority to NL59321A priority Critical patent/NL36228C/xx
Priority to DEN34389D priority patent/DE625821C/de
Priority to FR746114D priority patent/FR746114A/fr
Application filed by Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Priority to GB32777/32A priority patent/GB415373A/en
Priority to US644703A priority patent/US2044591A/en
Publication of GB415373A publication Critical patent/GB415373A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J17/00—Gas-filled discharge tubes with solid cathode
    • H01J17/38—Cold-cathode tubes
    • H01J17/40—Cold-cathode tubes with one cathode and one anode, e.g. glow tubes, tuning-indicator glow tubes, voltage-stabiliser tubes, voltage-indicator tubes

Landscapes

  • Circuit Arrangements For Discharge Lamps (AREA)
  • Endoscopes (AREA)
  • Primary Cells (AREA)
  • Vessels And Coating Films For Discharge Lamps (AREA)
GB32777/32A 1931-11-28 1932-11-19 Improvements in or relating to negative electric resistances Expired GB415373A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
NL59321A NL36228C (cs) 1931-11-28 1931-11-28
DEN34389D DE625821C (de) 1931-11-28 1932-10-30 Negativer Widerstand, bestehend aus einer heliumgefuellten elektrischen Entladungsroehre
FR746114D FR746114A (fr) 1931-11-28 1932-11-18 Résistance électrique négative
GB32777/32A GB415373A (en) 1931-11-28 1932-11-19 Improvements in or relating to negative electric resistances
US644703A US2044591A (en) 1931-11-28 1932-11-28 Gas-filled electric discharge tube

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL59321A NL36228C (cs) 1931-11-28 1931-11-28
GB32777/32A GB415373A (en) 1931-11-28 1932-11-19 Improvements in or relating to negative electric resistances

Publications (1)

Publication Number Publication Date
GB415373A true GB415373A (en) 1934-08-23

Family

ID=32510442

Family Applications (1)

Application Number Title Priority Date Filing Date
GB32777/32A Expired GB415373A (en) 1931-11-28 1932-11-19 Improvements in or relating to negative electric resistances

Country Status (5)

Country Link
US (1) US2044591A (cs)
DE (1) DE625821C (cs)
FR (1) FR746114A (cs)
GB (1) GB415373A (cs)
NL (1) NL36228C (cs)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2564157A (en) * 1947-06-12 1951-08-14 Eknayan Hrant Electric heating system and method of heating
US2702355A (en) * 1948-02-26 1955-02-15 Centre Nat Rech Scient Adjustable voltage glow discharge device
US4320435A (en) * 1979-03-06 1982-03-16 Tii Industries, Inc. Surge arrester assembly

Also Published As

Publication number Publication date
NL36228C (cs) 1935-09-16
FR746114A (fr) 1933-05-23
DE625821C (de) 1936-02-15
US2044591A (en) 1936-06-16

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