FR1013305A - Treatment process for electric lamp casings - Google Patents

Treatment process for electric lamp casings

Info

Publication number
FR1013305A
FR1013305A FR1013305DA FR1013305A FR 1013305 A FR1013305 A FR 1013305A FR 1013305D A FR1013305D A FR 1013305DA FR 1013305 A FR1013305 A FR 1013305A
Authority
FR
France
Prior art keywords
treatment process
electric lamp
lamp casings
casings
electric
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.)
GTE Sylvania Inc
Original Assignee
Sylvania Electric Products Inc
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 Sylvania Electric Products Inc filed Critical Sylvania Electric Products Inc
Application granted granted Critical
Publication of FR1013305A publication Critical patent/FR1013305A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/02—Details
    • H01J61/24—Means for obtaining or maintaining the desired pressure within the vessel
    • H01J61/26—Means for absorbing or adsorbing gas, e.g. by gettering; Means for preventing blackening of the envelope
FR1013305D 1949-02-28 1950-02-27 Treatment process for electric lamp casings Expired FR1013305A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US78854A US2637830A (en) 1949-02-28 1949-02-28 Treatment of electric lamp envelopes

Publications (1)

Publication Number Publication Date
FR1013305A true FR1013305A (en) 1952-07-28

Family

ID=22146603

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1013305D Expired FR1013305A (en) 1949-02-28 1950-02-27 Treatment process for electric lamp casings

Country Status (2)

Country Link
US (1) US2637830A (en)
FR (1) FR1013305A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE656992A (en) * 1963-12-30 1965-04-01
US3379917A (en) * 1965-10-27 1968-04-23 Sylvania Electric Prod Fluorescent lamp with a reflective coating containing tio2 and sb or its oxide
CH631575A5 (en) * 1978-04-28 1982-08-13 Bbc Brown Boveri & Cie METHOD FOR INCREASING THE LIFE OF A GAS DISCHARGE VESSEL.

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2182732A (en) * 1926-12-10 1939-12-05 Gen Electric Metal vapor lamp
US1998371A (en) * 1933-03-06 1935-04-16 Firm Rovo A G Electric glow-discharge vessel
US2097275A (en) * 1933-05-20 1937-10-26 Fischer Hellmuth Glass composition for electrical discharge devices
US2177691A (en) * 1935-06-28 1939-10-31 Gen Electric Luminescent or phosphorescent body and the process of manufacturing the same
US2344081A (en) * 1939-03-29 1944-03-14 Claude Andre Process for causing luminescent substances to adhere to glass walls
US2496065A (en) * 1948-01-16 1950-01-31 Sylvania Electric Prod Electric discharge lamp

Also Published As

Publication number Publication date
US2637830A (en) 1953-05-05

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