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FR426001A - Improvements to electric lamps - Google Patents

Improvements to electric lamps

Info

Publication number
FR426001A
FR426001A FR426001DA FR426001A FR 426001 A FR426001 A FR 426001A FR 426001D A FR426001D A FR 426001DA FR 426001 A FR426001 A FR 426001A
Authority
FR
France
Prior art keywords
electric lamps
lamps
electric
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
Pietro Chiesa
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.)
PIETRO CHIESA
Original Assignee
PIETRO CHIESA
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 PIETRO CHIESA filed Critical PIETRO CHIESA
Application granted granted Critical
Publication of FR426001A publication Critical patent/FR426001A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V9/00—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters
    • F21V9/02—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters for simulating daylight
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K1/00—Details
    • H01K1/28—Envelopes; Vessels
    • H01K1/32—Envelopes; Vessels provided with coatings on the walls; Vessels or coatings thereon characterised by the material thereof

Landscapes

  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
FR426001D 1910-02-15 1911-02-13 Improvements to electric lamps Expired FR426001A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT426001X 1910-02-15

Publications (1)

Publication Number Publication Date
FR426001A true FR426001A (en) 1911-06-26

Family

ID=1468614

Family Applications (1)

Application Number Title Priority Date Filing Date
FR426001D Expired FR426001A (en) 1910-02-15 1911-02-13 Improvements to electric lamps

Country Status (1)

Country Link
FR (1) FR426001A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE856725C (en) * 1951-01-09 1952-11-24 Theodor Rodehueser Ring gear made of rubber

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE856725C (en) * 1951-01-09 1952-11-24 Theodor Rodehueser Ring gear made of rubber

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