GB994454A - Improvements in glow discharge indicator tubes - Google Patents

Improvements in glow discharge indicator tubes

Info

Publication number
GB994454A
GB994454A GB342963A GB342963A GB994454A GB 994454 A GB994454 A GB 994454A GB 342963 A GB342963 A GB 342963A GB 342963 A GB342963 A GB 342963A GB 994454 A GB994454 A GB 994454A
Authority
GB
United Kingdom
Prior art keywords
discharge indicator
glow discharge
indicator tubes
jan
glow
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
GB342963A
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.)
Philips Electronics UK Ltd
Original Assignee
Philips Electronic and Associated Industries Ltd
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 Electronic and Associated Industries Ltd filed Critical Philips Electronic and Associated Industries Ltd
Publication of GB994454A publication Critical patent/GB994454A/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
    • H01J17/48—Cold-cathode tubes with more than one cathode or anode, e.g. sequence-discharge tube, counting tube, dekatron
    • H01J17/49—Display panels, e.g. with crossed electrodes, e.g. making use of direct current
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2893/00—Discharge tubes and lamps
    • H01J2893/0069—Tubes for displaying characters

Landscapes

  • Vessels And Coating Films For Discharge Lamps (AREA)
  • Investigating, Analyzing Materials By Fluorescence Or Luminescence (AREA)

Abstract

994,454. Glow-discharge indicator tubes. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. Jan. 28, 1963 [Jan. 31, 1962], No. 3429/63. Drawings to Specification. Heading H1D. A glow discharge indicator tube, e.g. of the type described in Specification 994,453, has the cathode lead-in wires covered by a thin graphite layer. The supply pins may also be coated with graphite. Specification 994,455 also is referred to.
GB342963A 1962-01-31 1963-01-28 Improvements in glow discharge indicator tubes Expired GB994454A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL274224 1962-01-31

Publications (1)

Publication Number Publication Date
GB994454A true GB994454A (en) 1965-06-10

Family

ID=19753580

Family Applications (1)

Application Number Title Priority Date Filing Date
GB342963A Expired GB994454A (en) 1962-01-31 1963-01-28 Improvements in glow discharge indicator tubes

Country Status (2)

Country Link
CH (1) CH448278A (en)
GB (1) GB994454A (en)

Also Published As

Publication number Publication date
CH448278A (en) 1967-12-15

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