FR517294A - Improvements to safety lamps for minors - Google Patents

Improvements to safety lamps for minors

Info

Publication number
FR517294A
FR517294A FR517294A FR517294DA FR517294A FR 517294 A FR517294 A FR 517294A FR 517294 A FR517294 A FR 517294A FR 517294D A FR517294D A FR 517294DA FR 517294 A FR517294 A FR 517294A
Authority
FR
France
Prior art keywords
minors
safety lamps
lamps
safety
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
FR517294A
Other languages
French (fr)
Inventor
Theodore Stretton
John William Jones
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 FR517294A publication Critical patent/FR517294A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21L—LIGHTING DEVICES OR SYSTEMS THEREOF, BEING PORTABLE OR SPECIALLY ADAPTED FOR TRANSPORTATION
    • F21L4/00—Electric lighting devices with self-contained electric batteries or cells

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
FR517294A 1919-04-24 1920-06-17 Improvements to safety lamps for minors Expired FR517294A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB517294X 1919-04-24

Publications (1)

Publication Number Publication Date
FR517294A true FR517294A (en) 1921-05-03

Family

ID=10461151

Family Applications (1)

Application Number Title Priority Date Filing Date
FR517294A Expired FR517294A (en) 1919-04-24 1920-06-17 Improvements to safety lamps for minors

Country Status (1)

Country Link
FR (1) FR517294A (en)

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