FR449364A - Improvements in the production of light or other radiations - Google Patents

Improvements in the production of light or other radiations

Info

Publication number
FR449364A
FR449364A FR449364A FR449364DA FR449364A FR 449364 A FR449364 A FR 449364A FR 449364 A FR449364 A FR 449364A FR 449364D A FR449364D A FR 449364DA FR 449364 A FR449364 A FR 449364A
Authority
FR
France
Prior art keywords
radiations
production
light
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
FR449364A
Other languages
French (fr)
Inventor
Samuel Oscar Hoffman
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of FR449364A publication Critical patent/FR449364A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K1/00—Details
    • H01K1/26—Screens; Filters
FR449364A 1912-10-08 1912-10-12 Improvements in the production of light or other radiations Expired FR449364A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB191222972T 1912-10-08

Publications (1)

Publication Number Publication Date
FR449364A true FR449364A (en) 1913-02-25

Family

ID=32369615

Family Applications (1)

Application Number Title Priority Date Filing Date
FR449364A Expired FR449364A (en) 1912-10-08 1912-10-12 Improvements in the production of light or other radiations

Country Status (2)

Country Link
FR (1) FR449364A (en)
GB (1) GB191222972A (en)

Also Published As

Publication number Publication date
GB191222972A (en) 1913-05-22

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