FR27431E - Improvements to lighting devices - Google Patents

Improvements to lighting devices

Info

Publication number
FR27431E
FR27431E FR27431DA FR27431E FR 27431 E FR27431 E FR 27431E FR 27431D A FR27431D A FR 27431DA FR 27431 E FR27431 E FR 27431E
Authority
FR
France
Prior art keywords
lighting devices
lighting
devices
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
Robert Lengele
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 FR27431E publication Critical patent/FR27431E/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S13/00—Non-electric lighting devices or systems employing a point-like light source; Non-electric lighting devices or systems employing a light source of unspecified shape

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
FR27431D 1923-02-19 1923-02-19 Improvements to lighting devices Expired FR27431E (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR27431T 1923-02-19

Publications (1)

Publication Number Publication Date
FR27431E true FR27431E (en) 1924-07-01

Family

ID=8665746

Family Applications (1)

Application Number Title Priority Date Filing Date
FR27431D Expired FR27431E (en) 1923-02-19 1923-02-19 Improvements to lighting devices

Country Status (1)

Country Link
FR (1) FR27431E (en)

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