GB520624A - Improvements in or relating to electric incandescent lamps or discharge tubes - Google Patents

Improvements in or relating to electric incandescent lamps or discharge tubes

Info

Publication number
GB520624A
GB520624A GB18485/39A GB1848539A GB520624A GB 520624 A GB520624 A GB 520624A GB 18485/39 A GB18485/39 A GB 18485/39A GB 1848539 A GB1848539 A GB 1848539A GB 520624 A GB520624 A GB 520624A
Authority
GB
United Kingdom
Prior art keywords
bulb
network
incandescent lamps
relating
electric incandescent
Prior art date
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
GB18485/39A
Other languages
English (en)
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.)
Philips Lamps Ltd
Koninklijke Philips NV
Original Assignee
Philips Lamps Ltd
Philips Gloeilampenfabrieken NV
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.)
Filing date
Publication date
Application filed by Philips Lamps Ltd, Philips Gloeilampenfabrieken NV filed Critical Philips Lamps Ltd
Publication of GB520624A publication Critical patent/GB520624A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J5/00—Details relating to vessels or to leading-in conductors common to two or more basic types of discharge tubes or lamps
    • H01J5/02—Vessels; Containers; Shields associated therewith; Vacuum locks
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C3/00—Glass compositions
    • C03C3/04—Glass compositions containing silica
    • C03C3/062—Glass compositions containing silica with less than 40% silica by weight
    • C03C3/07—Glass compositions containing silica with less than 40% silica by weight containing lead
    • C03C3/072—Glass compositions containing silica with less than 40% silica by weight containing lead containing boron

Landscapes

  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Vessels And Coating Films For Discharge Lamps (AREA)
  • Resistance Heating (AREA)
GB18485/39A 1938-06-27 1939-06-24 Improvements in or relating to electric incandescent lamps or discharge tubes Expired GB520624A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE520624X 1938-06-27

Publications (1)

Publication Number Publication Date
GB520624A true GB520624A (en) 1940-04-29

Family

ID=6551121

Family Applications (1)

Application Number Title Priority Date Filing Date
GB18485/39A Expired GB520624A (en) 1938-06-27 1939-06-24 Improvements in or relating to electric incandescent lamps or discharge tubes

Country Status (5)

Country Link
US (1) US2210489A (enrdf_load_stackoverflow)
BE (1) BE435108A (enrdf_load_stackoverflow)
FR (1) FR856896A (enrdf_load_stackoverflow)
GB (1) GB520624A (enrdf_load_stackoverflow)
NL (1) NL53900C (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2187037A (en) * 1986-02-19 1987-08-26 Robert Alexander Mclauchlan Light tube protector

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2508354A (en) * 1944-10-21 1950-05-23 Bendix Aviat Corp Spark plug or the like
US2643020A (en) * 1946-03-04 1953-06-23 Corning Glass Works Soft glass and composite article
GB649600A (en) * 1948-05-05 1951-01-31 Gen Electric Co Ltd Improvements in or relating to glass solders
US2617220A (en) * 1948-09-21 1952-11-11 Marine Aircraft Corp Paneled display for airplane wing surfaces
US2567415A (en) * 1948-09-30 1951-09-11 Bell Telephone Labor Inc Grid assembly and method of fabrication
US2770923A (en) * 1951-09-04 1956-11-20 Corning Glass Works Internal glass-to-metal seal
US3218184A (en) * 1956-05-28 1965-11-16 Jerome H Lemelson Apparatus and method for coating pipe
US3297188A (en) * 1964-05-14 1967-01-10 William R Aiken Envelope for cathode ray tubes
US3507646A (en) * 1965-12-27 1970-04-21 Xerox Corp Electrophotographic process using a single phase photoconductive glass imaging layer
US3519161A (en) * 1968-08-14 1970-07-07 Owens Illinois Inc Implosion-resistant cathode-ray tube and method of making
US3923530A (en) * 1973-06-27 1975-12-02 Ibm Dielectric glass composition
US4018613A (en) * 1976-02-06 1977-04-19 Corning Glass Works Diode encapsulation glass
US4224627A (en) * 1979-06-28 1980-09-23 International Business Machines Corporation Seal glass for nozzle assemblies of an ink jet printer
US6652127B2 (en) 2002-02-19 2003-11-25 Michael A. Tarabula Light unit shield device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2187037A (en) * 1986-02-19 1987-08-26 Robert Alexander Mclauchlan Light tube protector

Also Published As

Publication number Publication date
FR856896A (fr) 1940-08-13
NL53900C (enrdf_load_stackoverflow)
BE435108A (enrdf_load_stackoverflow)
US2210489A (en) 1940-08-06

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