GB289478A - Improvements in and relating to the manufacture of incandescent electric lamps - Google Patents

Improvements in and relating to the manufacture of incandescent electric lamps

Info

Publication number
GB289478A
GB289478A GB12361/28A GB1236128A GB289478A GB 289478 A GB289478 A GB 289478A GB 12361/28 A GB12361/28 A GB 12361/28A GB 1236128 A GB1236128 A GB 1236128A GB 289478 A GB289478 A GB 289478A
Authority
GB
United Kingdom
Prior art keywords
voltage
normal
relating
manufacture
filaments
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
GB12361/28A
Other languages
English (en)
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 GB289478A publication Critical patent/GB289478A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K1/00—Details
    • H01K1/52—Means for obtaining or maintaining the desired pressure within the vessel
    • H01K1/54—Means for absorbing or absorbing gas, or for preventing or removing efflorescence, e.g. by gettering

Landscapes

  • Discharge Lamp (AREA)
GB12361/28A 1927-04-29 1928-04-27 Improvements in and relating to the manufacture of incandescent electric lamps Expired GB289478A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US289478XA 1927-04-29 1927-04-29

Publications (1)

Publication Number Publication Date
GB289478A true GB289478A (en) 1928-10-18

Family

ID=21846398

Family Applications (1)

Application Number Title Priority Date Filing Date
GB12361/28A Expired GB289478A (en) 1927-04-29 1928-04-27 Improvements in and relating to the manufacture of incandescent electric lamps

Country Status (3)

Country Link
BE (1) BE350806A (enrdf_load_stackoverflow)
FR (1) FR653508A (enrdf_load_stackoverflow)
GB (1) GB289478A (enrdf_load_stackoverflow)

Also Published As

Publication number Publication date
FR653508A (fr) 1929-03-22
BE350806A (enrdf_load_stackoverflow)

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