The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 02, 1976
Filed:
Jul. 31, 1975
Applicant:
Inventors:
Gerhard Lange, Berlin, DT;
Gerhard Peche, Berlin, DT;
Assignee:
Siemens Aktiengesellschaft, Berlin & Munich, DT;
Primary Examiner:
Int. Cl.
CPC ...
H01J / ; H01J / ; H01J / ;
U.S. Cl.
CPC ...
313201 ; 313209 ; 313217 ; 313218 ; 317 62 ;
Abstract
This invention provides a cold-cathode gas-discharge tube comprising a gas-tight, electrical-insulating housing, a control cathode attached to and surrounding the outside of the gas-tight housing, two spaced main electrodes symmetrically mounted in the housing with their frontal surfaces facing each other, metallic rings attached to the frontal surfaces of both main electrodes, and layers of an activating material adhered to the frontal surfaces of both main electrodes within the metallic rings, whereby the main electrodes become in effect hollow electrodes.