FR538901A - Incandescent lamp improvements - Google Patents

Incandescent lamp improvements

Info

Publication number
FR538901A
FR538901A FR538901DA FR538901A FR 538901 A FR538901 A FR 538901A FR 538901D A FR538901D A FR 538901DA FR 538901 A FR538901 A FR 538901A
Authority
FR
France
Prior art keywords
incandescent lamp
incandescent
lamp
lamp improvements
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.)
Compagnie Francaise Thomson Houston SA
Original Assignee
Compagnie Francaise Thomson Houston SA
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 Compagnie Francaise Thomson Houston SA filed Critical Compagnie Francaise Thomson Houston SA
Application granted granted Critical
Publication of FR538901A publication Critical patent/FR538901A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K1/00—Details
    • H01K1/18—Mountings or supports for the incandescent body
FR538901D 1920-07-23 1921-07-07 Incandescent lamp improvements Expired FR538901A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US398594A US1591910A (en) 1920-07-23 1920-07-23 Incandescent lamp
GB31224/20A GB173934A (en) 1920-07-23 1920-11-04 Improvements in and relating to incandescent lamps
GB31223/20A GB175025A (en) 1920-07-23 1920-11-04 Improvements in and relating to incandescent electric lamps

Publications (1)

Publication Number Publication Date
FR538901A true FR538901A (en) 1922-06-17

Family

ID=40456201

Family Applications (2)

Application Number Title Priority Date Filing Date
FR538901D Expired FR538901A (en) 1920-07-23 1921-07-07 Incandescent lamp improvements
FR25162D Expired FR25162E (en) 1920-07-23 1921-07-08 Incandescent lamp improvements

Family Applications After (1)

Application Number Title Priority Date Filing Date
FR25162D Expired FR25162E (en) 1920-07-23 1921-07-08 Incandescent lamp improvements

Country Status (5)

Country Link
US (2) US1591910A (en)
DE (1) DE378816C (en)
FR (2) FR538901A (en)
GB (2) GB173934A (en)
NL (1) NL10193C (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL105575C (en) * 1955-10-14
US3364377A (en) * 1964-10-14 1968-01-16 Inst Of Natural Sciences Inc Incandescent electric lamp

Also Published As

Publication number Publication date
GB173934A (en) 1922-01-19
NL10193C (en) 1923-12-15
GB175025A (en) 1922-02-06
DE378816C (en) 1923-08-02
US1591910A (en) 1926-07-06
US1591911A (en) 1926-07-06
FR25162E (en) 1923-01-06

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