FR712751A - Improvements in the manufacture of colored electric light bulbs - Google Patents

Improvements in the manufacture of colored electric light bulbs

Info

Publication number
FR712751A
FR712751A FR712751DA FR712751A FR 712751 A FR712751 A FR 712751A FR 712751D A FR712751D A FR 712751DA FR 712751 A FR712751 A FR 712751A
Authority
FR
France
Prior art keywords
manufacture
electric light
light bulbs
colored electric
colored
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.)
Imperial Chemical Industries Ltd
Original Assignee
Imperial Chemical Industries Ltd
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 Imperial Chemical Industries Ltd filed Critical Imperial Chemical Industries Ltd
Application granted granted Critical
Publication of FR712751A publication Critical patent/FR712751A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
    • H01J9/20—Manufacture of screens on or from which an image or pattern is formed, picked up, converted or stored; Applying coatings to the vessel

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Photoreceptors In Electrophotography (AREA)
FR712751D 1930-03-06 1931-03-06 Improvements in the manufacture of colored electric light bulbs Expired FR712751A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB736630A GB349160A (en) 1930-03-06 1930-03-06 Improvements in the manufacture of coloured electric light bulbs

Publications (1)

Publication Number Publication Date
FR712751A true FR712751A (en) 1931-10-10

Family

ID=9831742

Family Applications (1)

Application Number Title Priority Date Filing Date
FR712751D Expired FR712751A (en) 1930-03-06 1931-03-06 Improvements in the manufacture of colored electric light bulbs

Country Status (2)

Country Link
FR (1) FR712751A (en)
GB (1) GB349160A (en)

Also Published As

Publication number Publication date
GB349160A (en) 1931-05-28

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