BE421705A - - Google Patents

Info

Publication number: BE421705A
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.)

1933-04-29

Publication of BE421705A publication Critical patent/BE421705A/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
- B—PERFORMING OPERATIONS; TRANSPORTING
- B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
- B42F—SHEETS TEMPORARILY ATTACHED TOGETHER; FILING APPLIANCES; FILE CARDS; INDEXING
- B42F13/00—Filing appliances with means for engaging perforations or slots
- B42F13/16—Filing appliances with means for engaging perforations or slots with claws or rings
- B42F13/20—Filing appliances with means for engaging perforations or slots with claws or rings pivotable about an axis or axes parallel to binding edges
- B42F13/28—Filing appliances with means for engaging perforations or slots with claws or rings pivotable about an axis or axes parallel to binding edges in two staggered sections

BE421705D 1933-04-29 BE421705A (en:Method)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
US668506A US2084772A (en)	1933-04-29	1933-04-29	Sodium vapor lamp

Publications (1)

Publication Number	Publication Date
BE421705A true BE421705A (en:Method)

Family

ID=24682569

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
BE421705D BE421705A (en:Method)	1933-04-29

Country Status (5)

Country	Link
US (1)	US2084772A (en:Method)
BE (1)	BE421705A (en:Method)
FR (1)	FR771823A (en:Method)
GB (1)	GB421705A (en:Method)
NL (1)	NL38561C (en:Method)

Families Citing this family (4)

* 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
US4691169A (en) *	1979-03-15	1987-09-01	Baum Robert A	Electrode assembly especially adapted to utilizing a magnetic field for measuring electric conductivity of treated non-polar liquids
DE69109139D1 (de) *	1990-02-02	1995-06-01	Philips Electronics Nv	Elektrodenlose Niederdruckentladungslampe.
DE29924000U1 (de) *	1999-09-28	2002-01-03	PharmaServ Marburg GmbH & Co. KG, 35041 Marburg	Leitfähigkeitssensor

0
- BE BE421705D patent/BE421705A/xx unknown
- NL NL38561D patent/NL38561C/xx active
1933
- 1933-04-29 US US668506A patent/US2084772A/en not_active Expired - Lifetime
1934
- 1934-03-26 GB GB9477/34A patent/GB421705A/en not_active Expired
- 1934-04-13 FR FR771823D patent/FR771823A/fr not_active Expired

Also Published As

Publication number	Publication date
NL38561C (en:Method)
GB421705A (en)	1934-12-28
FR771823A (fr)	1934-10-18
US2084772A (en)	1937-06-22

Publication	Publication Date	Title
FR742089A (en:Method)	1933-02-24
FR741978A (en:Method)	1933-02-23
FR741073A (en:Method)	1933-02-04
FR739318A (en:Method)	1933-01-06
FR741752A (en:Method)	1933-02-18
FR741831A (en:Method)	1933-02-21
FR743417A (en:Method)	1933-03-29
FR743124A (en:Method)	1933-03-23
FR742970A (en:Method)	1933-03-21
FR742536A (en:Method)	1933-03-08
FR741915A (en:Method)	1933-02-23
FR741964A (en:Method)	1933-02-23
BE395662A (en:Method)
BE394392A (en:Method)
BE389595A (en:Method)
BE394468A (en:Method)
BE394610A (en:Method)	1933-03-31
NL38561C (en:Method)
BE394631A (en:Method)
BE394410A (en:Method)
BE395278A (en:Method)
BE402677A (en:Method)
BE395712A (en:Method)
BE395669A (en:Method)
BE395039A (en:Method)