GB400388A - Improvements in or relating to electric discharge tubes - Google Patents

Improvements in or relating to electric discharge tubes

Info

Publication number
GB400388A
GB400388A GB23327/32A GB2332732A GB400388A GB 400388 A GB400388 A GB 400388A GB 23327/32 A GB23327/32 A GB 23327/32A GB 2332732 A GB2332732 A GB 2332732A GB 400388 A GB400388 A GB 400388A
Authority
GB
United Kingdom
Prior art keywords
neon
pressure
relating
electric discharge
discharge tubes
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
GB23327/32A
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
Application filed by Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Publication of GB400388A publication Critical patent/GB400388A/en
Expired legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01JELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00Gas-discharge or vapour-discharge lamps
    • H01J61/70Lamps with low-pressure unconstricted discharge having a cold pressure < 400 Torr
    • H01J61/74Lamps with low-pressure unconstricted discharge having a cold pressure < 400 Torr having a main light-emitting filling of difficult vaporisable metal vapour, e.g. sodium

Landscapes

  • Discharge Lamp (AREA)
  • Vessels And Coating Films For Discharge Lamps (AREA)
GB23327/32A 1931-12-24 1932-08-19 Improvements in or relating to electric discharge tubes Expired GB400388A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL400388X 1931-12-24

Publications (1)

Publication Number Publication Date
GB400388A true GB400388A (en) 1933-10-26

Family

ID=19785886

Family Applications (1)

Application Number Title Priority Date Filing Date
GB23327/32A Expired GB400388A (en) 1931-12-24 1932-08-19 Improvements in or relating to electric discharge tubes

Country Status (5)

Country Link
US (1) US1919933A (enrdf_load_stackoverflow)
DE (1) DE604600C (enrdf_load_stackoverflow)
FR (1) FR743225A (enrdf_load_stackoverflow)
GB (1) GB400388A (enrdf_load_stackoverflow)
NL (1) NL38459C (enrdf_load_stackoverflow)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2687471A (en) * 1948-05-01 1954-08-24 Western Union Telegraph Co Concentrated arc discharge device
DE1022322B (de) * 1953-07-31 1958-01-09 Gen Electric Co Ltd Elektrische Natriumdampfentladungslampe

Also Published As

Publication number Publication date
NL38459C (enrdf_load_stackoverflow)
US1919933A (en) 1933-07-25
DE604600C (de) 1934-10-24
FR743225A (enrdf_load_stackoverflow) 1933-03-25

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