GB384351A - An improved method of producing metal vapour in vacuum or gas-filled discharge tubes - Google Patents

An improved method of producing metal vapour in vacuum or gas-filled discharge tubes

Info

Publication number
GB384351A
GB384351A GB20273/31A GB2027331A GB384351A GB 384351 A GB384351 A GB 384351A GB 20273/31 A GB20273/31 A GB 20273/31A GB 2027331 A GB2027331 A GB 2027331A GB 384351 A GB384351 A GB 384351A
Authority
GB
United Kingdom
Prior art keywords
gas
vacuum
barium
filled discharge
improved method
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
GB20273/31A
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.)
Loewe Opta GmbH
Original Assignee
Loewe Opta GmbH
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 Loewe Opta GmbH filed Critical Loewe Opta GmbH
Publication of GB384351A publication Critical patent/GB384351A/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
    • H01J9/04—Manufacture of electrodes or electrode systems of thermionic cathodes
    • H01J9/042—Manufacture, activation of the emissive part

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Solid Thermionic Cathode (AREA)
  • Silicon Compounds (AREA)
GB20273/31A 1930-07-17 1931-07-15 An improved method of producing metal vapour in vacuum or gas-filled discharge tubes Expired GB384351A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE384351X 1930-07-17
US55129631A 1931-07-16 1931-07-16
US676040A US2031721A (en) 1930-07-17 1933-06-16 Method of manufacturing highly emissive cathodes

Publications (1)

Publication Number Publication Date
GB384351A true GB384351A (en) 1932-12-08

Family

ID=32511872

Family Applications (1)

Application Number Title Priority Date Filing Date
GB20273/31A Expired GB384351A (en) 1930-07-17 1931-07-15 An improved method of producing metal vapour in vacuum or gas-filled discharge tubes

Country Status (4)

Country Link
US (1) US2031721A (US06650917-20031118-M00005.png)
FR (1) FR719981A (US06650917-20031118-M00005.png)
GB (1) GB384351A (US06650917-20031118-M00005.png)
NL (1) NL34189C (US06650917-20031118-M00005.png)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB741369A (en) * 1952-10-22 1955-11-30 British Thomson Houston Co Ltd Improvements in and relating to thermionic cathodes
HU143979A (US06650917-20031118-M00005.png) * 1953-11-05
US7252868B2 (en) * 2004-01-08 2007-08-07 Certainteed Corporation Reinforced fibrous insulation product and method of reinforcing same

Also Published As

Publication number Publication date
US2031721A (en) 1936-02-25
NL34189C (US06650917-20031118-M00005.png)
FR719981A (fr) 1932-02-13

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