FR833741A - Secondary electron amplifier comprising a spherical photoelectric cathode - Google Patents

Secondary electron amplifier comprising a spherical photoelectric cathode

Info

Publication number: FR833741A
Authority: FR; France
Prior art keywords: secondary electron; photoelectric cathode; electron amplifier; spherical photoelectric; spherical
Prior art date: 1937-02-16
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

Other languages

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.)

1937-02-16

Filing date

1938-02-14

Publication date

1938-10-28

1938-02-14 Application filed by Loewe Opta GmbH filed Critical Loewe Opta GmbH

1938-10-28 Application granted granted Critical

1938-10-28 Publication of FR833741A publication Critical patent/FR833741A/en

Status Expired legal-status Critical Current

Classifications

- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J43/00—Secondary-emission tubes; Electron-multiplier tubes
- H01J43/04—Electron multipliers

FR833741D 1937-02-16 1938-02-14 Secondary electron amplifier comprising a spherical photoelectric cathode Expired FR833741A (en)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
DE512711X		1937-02-16

Publications (1)

Publication Number	Publication Date
FR833741A true FR833741A (en)	1938-10-28

Family

ID=6548209

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
FR833741D Expired FR833741A (en)	1937-02-16	1938-02-14	Secondary electron amplifier comprising a spherical photoelectric cathode

Country Status (4)

Country	Link
US (1)	US2227030A (en)
BE (1)	BE426405A (en)
FR (1)	FR833741A (en)
GB (2)	GB517806A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US3333133A (en) *	1948-04-15	1967-07-25	George A Morton	Pick up tube with infra-red sensitive thermionic cathode with cooling means spaced from the thermionic cathode
US2702865A (en) *	1949-04-02	1955-02-22	Texas Co	Electron multiplier
US2727119A (en) *	1954-11-02	1955-12-13	Electronics Corp America	Radiation-sensitive device
US2920205A (en) *	1957-10-02	1960-01-05	Wolfgang J Choyke	Radiant energy detector

0
- BE BE426405D patent/BE426405A/xx unknown
1938
- 1938-02-05 US US188951A patent/US2227030A/en not_active Expired - Lifetime
- 1938-02-14 GB GB24687/39A patent/GB517806A/en not_active Expired
- 1938-02-14 FR FR833741D patent/FR833741A/en not_active Expired
- 1938-02-14 GB GB4541/38A patent/GB512711A/en not_active Expired

Also Published As

Publication number	Publication date
GB517806A (en)	1940-02-08
GB512711A (en)	1939-09-25
BE426405A (en)
US2227030A (en)	1940-12-31

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