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 (zh)

Applications Claiming Priority (1)

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

Publications (1)

Publication Number	Publication Date
NL38459C true NL38459C (zh)

Family

ID=19785886

Family Applications (1)

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

Country Status (5)

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

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 (de) *	1953-07-31	1958-01-09	Gen Electric Co Ltd	Elektrische Natriumdampfentladungslampe

0
- NL NL38459D patent/NL38459C/xx active
- FR FR743225D patent/FR743225A/fr not_active Expired
1932
- 1932-08-03 DE DEN34040D patent/DE604600C/de 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
FR743225A (zh)	1933-03-25
GB400388A (en)	1933-10-26
DE604600C (de)	1934-10-24
US1919933A (en)	1933-07-25

Publication	Publication Date	Title
FR744225A (zh)	1933-04-14
FR744837A (zh)	1933-04-27
FR742972A (zh)	1933-03-21
FR743225A (zh)	1933-03-25
SE76774C1 (zh)	1933-03-21
BE378706A (zh)	1931-05-30
BE376624A (zh)
BE377652A (zh)
BE378610A (zh)
BE375720A (zh)
BE376369A (zh)
BE373801A (zh)
NL35645C (zh)
BE362823A (zh)
BE358734A (zh)
BE353568A (zh)
BE390859A (zh)
BE389678A (zh)
BE386766A (zh)
BE386612A (zh)	1932-03-31
BE378833A (zh)
BE378730A (zh)
BE378523A (zh)
BE377518A (zh)
BE378640A (zh)