NL38459C - - Google Patents

Info

Publication number: NL38459C
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.)

1931-12-24

Publication of NL38459C publication Critical patent/NL38459C/xx

Classifications

- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/70—Lamps with low-pressure unconstricted discharge having a cold pressure < 400 Torr
- H01J61/74—Lamps with low-pressure unconstricted discharge having a cold pressure < 400 Torr having a main light-emitting filling of difficult vaporisable metal vapour, e.g. sodium

NL38459D 1931-12-24 NL38459C (en)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
NL400388X		1931-12-24

Publications (1)

Publication Number	Publication Date
NL38459C true NL38459C (en)

Family

ID=19785886

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
NL38459D NL38459C (en)	1931-12-24

Country Status (5)

Country	Link
US (1)	US1919933A (en)
DE (1)	DE604600C (en)
FR (1)	FR743225A (en)
GB (1)	GB400388A (en)
NL (1)	NL38459C (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US2687471A (en) *	1948-05-01	1954-08-24	Western Union Telegraph Co	Concentrated arc discharge device
DE1022322B (en) *	1953-07-31	1958-01-09	Gen Electric Co Ltd	Electric sodium vapor discharge lamp

0
- NL NL38459D patent/NL38459C/xx active
- FR FR743225D patent/FR743225A/fr not_active Expired
1932
- 1932-08-03 DE DEN34040D patent/DE604600C/en not_active Expired
- 1932-08-19 GB GB23327/32A patent/GB400388A/en not_active Expired
1933
- 1933-01-12 US US651385A patent/US1919933A/en not_active Expired - Lifetime

Also Published As

Publication number	Publication date
GB400388A (en)	1933-10-26
DE604600C (en)	1934-10-24
US1919933A (en)	1933-07-25
FR743225A (en)	1933-03-25

Publication	Publication Date	Title
FR744225A (en)	1933-04-14
FR744837A (en)	1933-04-27
FR742972A (en)	1933-03-21
FR743225A (en)	1933-03-25
SE76774C1 (en)	1933-03-21
NL35645C (en)
BE377673A (en)
BE376809A (en)
BE386766A (en)
BE376624A (en)
BE376552A (en)
BE376494A (en)
BE376486A (en)
BE376369A (en)
BE375720A (en)
BE375242A (en)
NL36967C (en)
BE373801A (en)
BE371688A (en)
BE378184A (en)
BE358734A (en)
BE378706A (en)	1931-05-30
BE376960A (en)
BE378198A (en)
BE390859A (en)