NL28028C - - Google Patents

Info

Publication number: NL28028C
Authority: NL; Netherlands

Application number

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.)

1928-04-05

Publication of NL28028C publication Critical patent/NL28028C/xx

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)
Electrolytic Production Of Metals (AREA)
Solid Thermionic Cathode (AREA)
Luminescent Compositions (AREA)

NL28028D 1928-04-05 NL28028C (xx)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
DE309140X		1928-04-05

Publications (1)

Publication Number	Publication Date
NL28028C true NL28028C (xx)

Family

ID=6121936

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
NL28028D NL28028C (xx)	1928-04-05

Country Status (5)

Country	Link
US (1)	US1954596A (xx)
BE (1)	BE359560A (xx)
FR (1)	FR672489A (xx)
GB (1)	GB309140A (xx)
NL (1)	NL28028C (xx)

Families Citing this family (2)

* 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
US3273005A (en) *	1963-04-01	1966-09-13	Gen Electric	Electron emitter utilizing nitride emissive material

0
- NL NL28028D patent/NL28028C/xx active
- BE BE359560D patent/BE359560A/xx unknown
1929
- 1929-04-04 GB GB10399/29A patent/GB309140A/en not_active Expired
- 1929-04-04 FR FR672489D patent/FR672489A/fr not_active Expired
- 1929-04-05 US US352919A patent/US1954596A/en not_active Expired - Lifetime

Also Published As

Publication number	Publication date
FR672489A (fr)	1929-12-28
GB309140A (en)	1930-08-05
US1954596A (en)	1934-04-10
BE359560A (xx)

Publication	Publication Date	Title
BE364762A (xx)
BE361924A (xx)
BE267873A (xx)
NL28028C (xx)
BE283147A (xx)
BE302117A (xx)
BE302864A (xx)
BE303782A (xx)
BE313010A (xx)
BE313099A (xx)
BE317010A (xx)
BE318611A (xx)
BE323769A (xx)
BE331538A (xx)
BE333487A (xx)
BE337939A (xx)
BE341382A (xx)
BE346318A (xx)
BE346330A (xx)
BE360249A (xx)
BE359997A (xx)
BE346414A (xx)
BE346912A (xx)
BE359011A (xx)
BE358445A (xx)