BE440174A - - Google Patents

Info

Publication number: BE440174A
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.)

1939-06-06

Publication of BE440174A publication Critical patent/BE440174A/xx

Classifications

- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J43/00—Secondary-emission tubes; Electron-multiplier tubes
- H01J43/02—Tubes in which one or a few electrodes are secondary-electron emitting electrodes

BE440174D 1939-06-06 BE440174A (da)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
NL217330X		1939-06-06

Publications (1)

Publication Number	Publication Date
BE440174A true BE440174A (da)

Family

ID=19779131

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
BE440174D BE440174A (da)	1939-06-06

Country Status (7)

Country	Link
US (1)	US2340631A (da)
BE (1)	BE440174A (da)
CH (1)	CH217330A (da)
DE (1)	DE1074764B (da)
FR (1)	FR868395A (da)
GB (2)	GB544225A (da)
NL (1)	NL52549C (da)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
BE477662A (da) *	1939-07-28
BE450216A (da) *	1942-04-17
US2674661A (en) *	1948-08-12	1954-04-06	Rca Corp	Electron multiplier device
US2909702A (en) *	1948-10-01	1959-10-20	Siemens Ag	Discharge vessel cooled by radiation
US2675431A (en) *	1949-08-18	1954-04-13	Nat Union Radio Corp	Transit time compensated multiplier tube

0
- NL NL52549D patent/NL52549C/xx active
- BE BE440174D patent/BE440174A/xx unknown
- DE DENDAT1074764D patent/DE1074764B/de active Pending
1940
- 1940-06-03 GB GB9704/40A patent/GB544225A/en not_active Expired
- 1940-12-26 FR FR868395D patent/FR868395A/fr not_active Expired
- 1940-12-31 CH CH217330D patent/CH217330A/de unknown
1941
- 1941-08-21 US US407735A patent/US2340631A/en not_active Expired - Lifetime
1947
- 1947-12-31 GB GB35179/47A patent/GB629881A/en not_active Expired

Also Published As

Publication number	Publication date
NL52549C (da)
CH217330A (de)	1941-10-15
DE1074764B (de)	1960-02-04
FR868395A (fr)	1941-12-29
GB544225A (en)	1942-04-02
GB629881A (en)	1949-09-29
US2340631A (en)	1944-02-01

Publication	Publication Date	Title
FR840891A (da)	1939-05-05
BE434647A (da)
BE434662A (da)
NL56381C (da)
BE432222A (da)
BE440200A (da)
NL52549C (da)
BE439720A (da)
BE439182A (da)
BE477662A (da)
BE436027A (da)
BE436022A (da)
BE436021A (da)
BE436007A (da)	1939-09-30
BE435988A (da)	1939-09-30
BE435911A (da)
BE435823A (da)
BE435757A (da)
BE435664A (da)	1939-08-31
BE435654A (da)
BE435601A (da)
BE435474A (da)
BE435413A (da)
BE435335A (da)
BE435213A (da)	1939-07-08