FR504503A - Improvements to electric lamps - Google Patents

Improvements to electric lamps

Info

Publication number
FR504503A
FR504503A FR504503A FR504503DA FR504503A FR 504503 A FR504503 A FR 504503A FR 504503 A FR504503 A FR 504503A FR 504503D A FR504503D A FR 504503DA FR 504503 A FR504503 A FR 504503A
Authority
FR
France
Prior art keywords
electric lamps
lamps
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
FR504503A
Other languages
French (fr)
Inventor
Eneas Guinaraes Mascarenhas
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.)
ENEAS GUINARAES MASCARENHAS
Original Assignee
ENEAS GUINARAES MASCARENHAS
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 ENEAS GUINARAES MASCARENHAS filed Critical ENEAS GUINARAES MASCARENHAS
Application granted granted Critical
Publication of FR504503A publication Critical patent/FR504503A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K9/00—Lamps having two or more incandescent bodies separately heated
FR504503A 1919-09-05 1919-10-02 Improvements to electric lamps Expired FR504503A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US321833A US1421276A (en) 1919-09-05 1919-09-05 Electric lamp

Publications (1)

Publication Number Publication Date
FR504503A true FR504503A (en) 1920-07-07

Family

ID=23252221

Family Applications (1)

Application Number Title Priority Date Filing Date
FR504503A Expired FR504503A (en) 1919-09-05 1919-10-02 Improvements to electric lamps

Country Status (4)

Country Link
US (1) US1421276A (en)
DE (1) DE338035C (en)
FR (1) FR504503A (en)
GB (1) GB153153A (en)

Also Published As

Publication number Publication date
GB153153A (en) 1920-11-04
US1421276A (en) 1922-06-27
DE338035C (en) 1921-06-11

Similar Documents

Publication Publication Date Title
FR527223A (en) Improvements to electrical contacts
FR527864A (en) Improvements to electrical switches
FR522474A (en) Improvements to electric lamps
FR534036A (en) Improvements to electrical machines
FR504503A (en) Improvements to electric lamps
FR504556A (en) Improvements to electric lamps
FR537546A (en) Improvements to electric lamps
FR509665A (en) Improvements to electric capacitors
FR527753A (en) Improvements to electrical transformers
FR528196A (en) Improvements to cinematographs
FR526268A (en) Improvements to insulating sleeves
FR506637A (en) Improvements to electric accumulators
FR497552A (en) Improvements to electric lighters
FR539749A (en) Improvements relating to electrical switches
FR529405A (en) Improvements to electric lamps
FR551623A (en) Improvements to electric lamps
FR526359A (en) Improvements to electric magnetos
FR517227A (en) Improvements to electric steam lamps
FR522985A (en) Improvements to electric compresses
FR506103A (en) Improvements to electric elevators
FR524003A (en) Improvements to electric capacitors
FR22573E (en) Improvements to electric capacitors
FR22544E (en) Improvements to electric capacitors
FR24637E (en) Improvements to insulators
FR512287A (en) Improvements relating to dynamos