FR789491A - Improvements to mine lamps - Google Patents

Improvements to mine lamps

Info

Publication number
FR789491A
FR789491A FR789491DA FR789491A FR 789491 A FR789491 A FR 789491A FR 789491D A FR789491D A FR 789491DA FR 789491 A FR789491 A FR 789491A
Authority
FR
France
Prior art keywords
mine lamps
mine
lamps
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.)
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 FR789491A publication Critical patent/FR789491A/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
    • F21S9/00—Lighting devices with a built-in power supply; Systems employing lighting devices with a built-in power supply
    • F21S9/04—Lighting devices with a built-in power supply; Systems employing lighting devices with a built-in power supply the power supply being a generator

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
FR789491D 1934-07-31 1934-07-31 Improvements to mine lamps Expired FR789491A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR789491T 1934-07-31

Publications (1)

Publication Number Publication Date
FR789491A true FR789491A (en) 1935-10-29

Family

ID=9220118

Family Applications (1)

Application Number Title Priority Date Filing Date
FR789491D Expired FR789491A (en) 1934-07-31 1934-07-31 Improvements to mine lamps

Country Status (1)

Country Link
FR (1) FR789491A (en)

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