GB503398A - Improvements in and relating to electric lamps - Google Patents

Improvements in and relating to electric lamps

Info

Publication number
GB503398A
GB503398A GB31822/38A GB3182238A GB503398A GB 503398 A GB503398 A GB 503398A GB 31822/38 A GB31822/38 A GB 31822/38A GB 3182238 A GB3182238 A GB 3182238A GB 503398 A GB503398 A GB 503398A
Authority
GB
United Kingdom
Prior art keywords
relating
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
GB31822/38A
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.)
British Thomson Houston Co Ltd
Original Assignee
British Thomson Houston Co 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 British Thomson Houston Co Ltd filed Critical British Thomson Houston Co Ltd
Publication of GB503398A publication Critical patent/GB503398A/en
Expired legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01JELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J9/00Apparatus 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
    • H01J9/20Manufacture 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)
GB31822/38A 1937-11-05 1938-11-03 Improvements in and relating to electric lamps Expired GB503398A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US503398XA 1937-11-05 1937-11-05

Publications (1)

Publication Number Publication Date
GB503398A true GB503398A (en) 1939-04-05

Family

ID=21964686

Family Applications (1)

Application Number Title Priority Date Filing Date
GB31822/38A Expired GB503398A (en) 1937-11-05 1938-11-03 Improvements in and relating to electric lamps

Country Status (1)

Country Link
GB (1) GB503398A (en)

Similar Documents

Publication Publication Date Title
GB511397A (en) Improvements in or relating to gas- or vapour-filled electric discharge devices
GB510539A (en) Improvements in electric lamps
GB506704A (en) Improvements in or relating to stenters
GB513321A (en) Improvements in or relating to electric discharge lamps
GB503398A (en) Improvements in and relating to electric lamps
GB507410A (en) Improvements in and relating to silent electric switches
GB509030A (en) Improvements in and relating to electric discharge devices
GB507668A (en) Improvements in and relating to television
GB485709A (en) Improvements in and relating to electric motors
GB513570A (en) Improvements in and relating to luminescent materials
GB505603A (en) Improvements in or relating to liquid-insulated electric circuit-breakers
GB512778A (en) Improvements in and relating to electric discharge lamps
GB489158A (en) Improvements in and relating to electric transformers
GB510437A (en) Improvements in and relating to electric discharge devices
AU110305B2 (en) Improvements in and relating to electric lamps
GB510956A (en) Improvements in and relating to electric lamp bulbs
GB487581A (en) Improvements in and relating to electric fans
AU423938A (en) Improvements in and relating to electric lamps
GB484451A (en) Improvements in and relating to electric transformers
AU102526B2 (en) Improvements in or relating to electric discharge lamps
AU103762B2 (en) Improvements in and relating to electrical fuses
AU102679B2 (en) Improvements in or relating to electric incandescent lamps
AU103704B2 (en) Improvements in and relating to lighting arrangements for gas-heated apparatus
AU109799B2 (en) Improvements in and relating to electric lighting fittings
GB536515A (en) Improvements in and relating to electric transformers