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FR672728A - Improvements to carbon or electric arc electrodes for taking panchromatic films - Google Patents

Improvements to carbon or electric arc electrodes for taking panchromatic films

Info

Publication number
FR672728A
FR672728A FR672728DA FR672728A FR 672728 A FR672728 A FR 672728A FR 672728D A FR672728D A FR 672728DA FR 672728 A FR672728 A FR 672728A
Authority
FR
France
Prior art keywords
taking
carbon
electric arc
arc electrodes
panchromatic
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.)
CIE LORRAINE DE CHARBONS POUR
Original Assignee
CIE LORRAINE DE CHARBONS POUR
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 CIE LORRAINE DE CHARBONS POUR filed Critical CIE LORRAINE DE CHARBONS POUR
Application granted granted Critical
Publication of FR672728A publication Critical patent/FR672728A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B31/00—Electric arc lamps
    • H05B31/02—Details
    • H05B31/06—Electrodes
    • H05B31/065—Electrodes for flame arc lamps
FR672728D 1928-07-23 1928-07-23 Improvements to carbon or electric arc electrodes for taking panchromatic films Expired FR672728A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR672728T 1928-07-23

Publications (1)

Publication Number Publication Date
FR672728A true FR672728A (en) 1930-01-06

Family

ID=9017683

Family Applications (1)

Application Number Title Priority Date Filing Date
FR672728D Expired FR672728A (en) 1928-07-23 1928-07-23 Improvements to carbon or electric arc electrodes for taking panchromatic films

Country Status (1)

Country Link
FR (1) FR672728A (en)

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