FR575308A - Special lamp for projections - Google Patents

Special lamp for projections

Info

Publication number
FR575308A
FR575308A FR575308DA FR575308A FR 575308 A FR575308 A FR 575308A FR 575308D A FR575308D A FR 575308DA FR 575308 A FR575308 A FR 575308A
Authority
FR
France
Prior art keywords
projections
special lamp
lamp
special
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)
Inventor
Eugene Gilbert
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 filed Critical
Application granted granted Critical
Publication of FR575308A publication Critical patent/FR575308A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K1/00—Details
    • H01K1/28—Envelopes; Vessels
    • H01K1/32—Envelopes; Vessels provided with coatings on the walls; Vessels or coatings thereon characterised by the material thereof
FR575308D 1924-01-07 1924-01-07 Special lamp for projections Expired FR575308A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR575308T 1924-01-07

Publications (1)

Publication Number Publication Date
FR575308A true FR575308A (en) 1924-07-28

Family

ID=8953295

Family Applications (1)

Application Number Title Priority Date Filing Date
FR575308D Expired FR575308A (en) 1924-01-07 1924-01-07 Special lamp for projections

Country Status (1)

Country Link
FR (1) FR575308A (en)

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