NL44137C - - Google Patents

Info

Publication number: NL44137C
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.)

1934-03-14

Publication of NL44137C publication Critical patent/NL44137C/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
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J40/00—Photoelectric discharge tubes not involving the ionisation of a gas
- H01J40/16—Photoelectric discharge tubes not involving the ionisation of a gas having photo- emissive cathode, e.g. alkaline photoelectric cell

NL44137D 1934-03-14 NL44137C (en:Method)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
DE426389X		1934-03-14

Publications (1)

Publication Number	Publication Date
NL44137C true NL44137C (en:Method)

Family

ID=6477182

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
NL44137D NL44137C (en:Method)	1934-03-14

Country Status (4)

Country	Link
US (1)	US2031331A (en:Method)
FR (1)	FR786412A (en:Method)
GB (1)	GB426389A (en:Method)
NL (1)	NL44137C (en:Method)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
CN106941070A (zh) *	2016-08-03	2017-07-11	成都青岗科技有限公司	一种球形紫外光电管

0
- NL NL44137D patent/NL44137C/xx active
1934
- 1934-12-04 GB GB34871/34A patent/GB426389A/en not_active Expired
1935
- 1935-02-28 FR FR786412D patent/FR786412A/fr not_active Expired
- 1935-03-13 US US10768A patent/US2031331A/en not_active Expired - Lifetime

Also Published As

Publication number	Publication date
GB426389A (en)	1935-04-02
FR786412A (fr)	1935-09-03
US2031331A (en)	1936-02-18

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