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
GB939/21A
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.)
JOHANNA GOOSMANN
Original Assignee
JOHANNA GOOSMANN
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 JOHANNA GOOSMANNfiledCriticalJOHANNA GOOSMANN
Publication of GB157095ApublicationCriticalpatent/GB157095A/en
H01J17/00—Gas-filled discharge tubes with solid cathode
H01J17/38—Cold-cathode tubes
H01J17/48—Cold-cathode tubes with more than one cathode or anode, e.g. sequence-discharge tube, counting tube, dekatron
H01J17/49—Display panels, e.g. with crossed electrodes, e.g. making use of direct current
H01J17/491—Display panels, e.g. with crossed electrodes, e.g. making use of direct current with electrodes arranged side by side and substantially in the same plane, e.g. for displaying alphanumeric characters
Landscapes
Discharge Lamp
(AREA)
Abstract
157,095. Goosmann, J. May 3, 1918, [Convention date]. Drawings to Specification. Vacuum tubes.-In a discharge lamp containing rare gas in which the illumination is produced by the " negative glow," the cathode consists of a script-like metallic conductor preferably arranged on a dark background of coloured glass or other material.
GB939/21A1918-05-031921-01-08Improvements in electric gas lamps with glow discharge
ExpiredGB157095A
(en)
Improvements in sources of light comprising in combination a high-pressure metal-vapour electric discharge device and an electric incandescent filament