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
GB29295/23A
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.)
General Electric Co PLC
Original Assignee
General Electric Co PLC
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 General Electric Co PLCfiledCriticalGeneral Electric Co PLC
Publication of GB214175ApublicationCriticalpatent/GB214175A/en
H01K3/00—Apparatus or processes adapted to the manufacture, installing, removal, or maintenance of incandescent lamps or parts thereof
H01K3/02—Manufacture of incandescent bodies
Landscapes
Engineering & Computer Science
(AREA)
Manufacturing & Machinery
(AREA)
Moulding By Coating Moulds
(AREA)
Manufacturing Of Steel Electrode Plates
(AREA)
Abstract
214,175. General Electric Co., Ltd., (Assignees of Patent-Treuhand-Ges. f³r Elektrische Gl³hlampen). May 17, 1923, [Convention date]. Filaments. - The operations of passing a tungsten filament g through a hot zone between two electric contacts c, f to produce long crystals in its structure and of winding it into a spiral form, as upon a mandrel d, are performed simultaneously.