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:
Apr. 28, 1981
Filed:
Jul. 06, 1977
Applicant:
Inventor:
Stephen J Hellier, Milan, IT;
Assignee:
S.A.E.S. Getters S.p.A., Milan, IT;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F04B / ;
U.S. Cl.
CPC ...
417 51 ; 2521811 ;
Abstract
A device for releasing water vapor in electron tubes comprises a holder and a water vapor releasing material carried by said holder. In one embodiment the water vapor releasing material is a hydroxide or hydrated oxide of a metallic element in combination with a binder. In another embodiment it is hydrated alumina.