FR705272A - Improvements to incandescent electric lamps or discharge tubes - Google Patents

Improvements to incandescent electric lamps or discharge tubes

Info

Publication number
FR705272A
FR705272A FR705272DA FR705272A FR 705272 A FR705272 A FR 705272A FR 705272D A FR705272D A FR 705272DA FR 705272 A FR705272 A FR 705272A
Authority
FR
France
Prior art keywords
discharge tubes
electric lamps
incandescent electric
incandescent
lamps
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
Other languages
French (fr)
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.)
Koninklijke Philips NV
Original Assignee
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 Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Application granted granted Critical
Publication of FR705272A publication Critical patent/FR705272A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • C03C27/00—Joining pieces of glass to pieces of other inorganic material; Joining glass to glass other than by fusing
    • C03C27/02—Joining pieces of glass to pieces of other inorganic material; Joining glass to glass other than by fusing by fusing glass directly to metal

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Life Sciences & Earth Sciences (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)
FR705272D 1929-11-30 1930-11-07 Improvements to incandescent electric lamps or discharge tubes Expired FR705272A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL49216A NL26811C (en) 1929-11-30 1929-11-30

Publications (1)

Publication Number Publication Date
FR705272A true FR705272A (en) 1931-06-04

Family

ID=33028936

Family Applications (1)

Application Number Title Priority Date Filing Date
FR705272D Expired FR705272A (en) 1929-11-30 1930-11-07 Improvements to incandescent electric lamps or discharge tubes

Country Status (4)

Country Link
US (1) US1857203A (en)
DE (1) DE548825C (en)
FR (1) FR705272A (en)
NL (1) NL26811C (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2627536A (en) * 1949-05-28 1953-02-03 Bendix Aviat Corp Electronic tube base and the like
US3219753A (en) * 1963-05-15 1965-11-23 Univ Illinois Gas-impervious electrical feedthrough for use between two zones of differing pressures

Also Published As

Publication number Publication date
US1857203A (en) 1932-05-10
DE548825C (en) 1932-04-20
NL26811C (en) 1932-05-17

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