FR454273A - Improvements to miners' lamps - Google Patents

Improvements to miners' lamps

Info

Publication number
FR454273A
FR454273A FR454273DA FR454273A FR 454273 A FR454273 A FR 454273A FR 454273D A FR454273D A FR 454273DA FR 454273 A FR454273 A FR 454273A
Authority
FR
France
Prior art keywords
miners
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)
Inventor
Frederic Ehninger Baldwin
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 FR454273A publication Critical patent/FR454273A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10H—PRODUCTION OF ACETYLENE BY WET METHODS
    • C10H21/00—Details of acetylene generators; Accessory equipment for, or features of, the wet production of acetylene
    • C10H21/08—Safety devices for acetylene generators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21L—LIGHTING DEVICES OR SYSTEMS THEREOF, BEING PORTABLE OR SPECIALLY ADAPTED FOR TRANSPORTATION
    • F21L23/00—Non-electric hand-lamps for miners

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Chemistry (AREA)
FR454273D 1913-02-12 1913-02-12 Improvements to miners' lamps Expired FR454273A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR454273T 1913-02-12

Publications (1)

Publication Number Publication Date
FR454273A true FR454273A (en) 1913-06-30

Family

ID=1494295

Family Applications (1)

Application Number Title Priority Date Filing Date
FR454273D Expired FR454273A (en) 1913-02-12 1913-02-12 Improvements to miners' lamps

Country Status (1)

Country Link
FR (1) FR454273A (en)

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