BE448724A - - Google Patents

Info

Publication number: BE448724A
Authority: BE; Belgium

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.)

1942-01-15

Publication of BE448724A publication Critical patent/BE448724A/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)
Discharge Lamp (AREA)
Vessels And Coating Films For Discharge Lamps (AREA)

BE448724D 1942-01-15 BE448724A (xx)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
FR234237X		1942-01-15

Publications (1)

Publication Number	Publication Date
BE448724A true BE448724A (xx)

Family

ID=8882671

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
BE448724D BE448724A (xx)	1942-01-15

Country Status (7)

Country	Link
US (1)	US2473900A (xx)
BE (1)	BE448724A (xx)
CH (1)	CH234237A (xx)
DE (1)	DE891427C (xx)
FR (1)	FR963794A (xx)
GB (1)	GB610535A (xx)
NL (1)	NL71838C (xx)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US3321662A (en) *	1962-07-02	1967-05-23	Sylvania Electric Prod	Electric lamp with tubular body and light transmitting closure having over-lapping flange seal

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE409799C (de) *	1923-04-22	1925-02-12	Internat Western Electric Comp	Verfahren zur Herstellung stark Elektronen aussendender UEberzuege von Erdalkalioxyden bei Gluehkathoden
DE605855C (de) *	1928-04-05	1934-11-19	Bernhard Loewe Dr	Verfahren zur Herstellung von Material fuer Hochemissionskathoden
US2007920A (en) *	1931-12-07	1935-07-09	Sirian Lamp Co	Short wave length electric lamp
US2275886A (en) *	1941-04-30	1942-03-10	Gen Electric	Process of activating cathodes
US2290208A (en) *	1941-09-26	1942-07-21	Eugene A Quarrie	Process for the manufacture of gaseous discharge lamps

0
- BE BE448724D patent/BE448724A/xx unknown
- FR FR963794D patent/FR963794A/fr not_active Expired
- NL NL71838D patent/NL71838C/xx active
1942
- 1942-05-09 DE DES18481D patent/DE891427C/de not_active Expired
1943
- 1943-01-08 CH CH234237D patent/CH234237A/fr unknown
1945
- 1945-10-22 GB GB27793/45A patent/GB610535A/en not_active Expired
1947
- 1947-07-08 US US759590A patent/US2473900A/en not_active Expired - Lifetime

Also Published As

Publication number	Publication date
DE891427C (de)	1953-09-28
CH234237A (fr)	1944-09-15
GB610535A (en)	1948-10-18
US2473900A (en)	1949-06-21
NL71838C (xx)
FR963794A (xx)	1950-07-20

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