GB288180A - - Google Patents

Info

Publication number
GB288180A
GB288180A GB9693/28A GB969328A GB288180A GB 288180 A GB288180 A GB 288180A GB 9693/28 A GB9693/28 A GB 9693/28A GB 969328 A GB969328 A GB 969328A GB 288180 A GB288180 A GB 288180A
Authority
GB
United Kingdom
Prior art keywords
barium
ges
siemens
void
april
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
GB9693/28A
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.)
Siemens and Halske AG
Original Assignee
Siemens and Halske AG
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 Siemens and Halske AG filed Critical Siemens and Halske AG
Publication of GB288180A publication Critical patent/GB288180A/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)
  • Discharge Lamp (AREA)
  • Solid Thermionic Cathode (AREA)
GB9693/28A 1927-04-02 1928-03-30 Expired GB288180A (xx)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE288180T 1927-04-02

Publications (1)

Publication Number Publication Date
GB288180A true GB288180A (xx) 1929-07-30

Family

ID=31893920

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9693/28A Expired GB288180A (xx) 1927-04-02 1928-03-30

Country Status (3)

Country Link
US (1) US1830162A (xx)
FR (1) FR652017A (xx)
GB (1) GB288180A (xx)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2505909A (en) * 1948-02-26 1950-05-02 Bishop H Russell Cathode-ray tube with oxide coated cathode

Also Published As

Publication number Publication date
FR652017A (fr) 1929-03-02
US1830162A (en) 1931-11-03

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