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:
Oct. 04, 1977
Filed:
May. 08, 1975
Applicant:
Inventor:
Theodorus Maria Schoenmakers, Eindhoven, NL;
Assignee:
U.S. Philips Corporation, New York, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01J / ; H01J / ; H01J / ;
U.S. Cl.
CPC ...
313146 ; 2191 / ; 313217 ; 313237 ; 3151118 ;
Abstract
Restorable cold cathode in a gas discharge electron ion gun in which the eroded material in the active surface of the cathode is restored by supplying new material in the form of a wire which is moved through a hole in the cathode body by means of a screw spindle.
Schoenmakers, Theodorus. (1977). Restorable cold cathode in a gas discharge electron gun (U.S. Patent No. 4052633). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4052633
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile