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:
May. 21, 1991
Filed:
Mar. 30, 1989
Applicant:
Inventors:
Mario Busso, Turin, IT;
Mauro Audi, Rivoli, IT;
Assignee:
Varian, S.p.A., Leint, IT;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01J / ;
U.S. Cl.
CPC ...
31511191 ; 324460 ; 417 49 ;
Abstract
An improved electronic device allows for the feeding of an ion pump with a plurality of voltages that are changed as a function of the current drawn by the pump and therefore of the pressure value within the pump.
Quick Actions:
Busso, Mario. (1991). Electronic feeder for an ion pump (U.S. Patent No. 5017836). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5017836
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