FR21256E - Perfectionnements aux projecteurs d'exploration - Google Patents

Perfectionnements aux projecteurs d'exploration

Info

Publication number
FR21256E
FR21256E FR21256A FR21256DA FR21256E FR 21256 E FR21256 E FR 21256E FR 21256 A FR21256 A FR 21256A FR 21256D A FR21256D A FR 21256DA FR 21256 E FR21256 E FR 21256E
Authority
FR
France
Prior art keywords
projectors
exploration
exploration projectors
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
FR21256A
Other languages
English (en)
Inventor
Elmer Ambrose Sperry
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 FR21256E publication Critical patent/FR21256E/fr
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
    • H05B31/003—Electric arc lamps of a special type
    • H05B31/0039—Projectors, the construction of which depends upon the presence of the arc
FR21256A 1918-02-07 1918-02-07 Perfectionnements aux projecteurs d'exploration Expired FR21256E (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR21256T 1918-02-07

Publications (1)

Publication Number Publication Date
FR21256E true FR21256E (fr) 1920-08-05

Family

ID=8660294

Family Applications (1)

Application Number Title Priority Date Filing Date
FR21256A Expired FR21256E (fr) 1918-02-07 1918-02-07 Perfectionnements aux projecteurs d'exploration

Country Status (1)

Country Link
FR (1) FR21256E (fr)

Similar Documents

Publication Publication Date Title
FR503797A (fr) Perfectionnements aux paliers
FR500637A (fr) Perfectionnements aux carburateurs
CH81705A (fr) Transporteur électro-magnetique
CH82349A (fr) Transporteur électro-magnétique
FR506418A (fr) Perfectionnements à la cinématographie
FR491986A (fr) Perfectionnements aux projecteurs d'exploration
FR490610A (fr) Cinématographe
CH82261A (de) Kinematograph
CH78956A (de) Kinematograph
FR521795A (fr) Perfectionnements aux carburateurs
FR500638A (fr) Perfectionnements aux carburateurs
FR500639A (fr) Perfectionnements aux carburateurs
FR491584A (fr) Perfectionnements aux carburateurs
FR501152A (fr) Perfectionnements aux bancs d'étirage
CH79375A (de) Schraubstock
CH79536A (de) Schraubstock
FR497010A (fr) Carburateur
FR497619A (fr) Perfectionnement apporté aux carburateurs
FR501654A (fr) Perfectionnement apporté aux carburateurs
FR494923A (fr) Articulateur à griffes-vis
FR499336A (fr) Améliorations aux obturateurs pour machines cinématographiques et semblables
FR496474A (fr) Projecteur rotatif
FR503311A (fr) Perfectionnements aux bielles
FR493270A (fr) Perfectionnement apporté aux pipes
FR500424A (fr) Perfectionnement aux roues d'engrenage