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:
Jul. 18, 1978
Filed:
Dec. 21, 1970
Applicant:
Inventor:
John Treagus Balkwill, Saugus, CA (US);
Assignee:
International Telephone and Telegraph Corporation, Nutley, NJ (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C03C / ; C03B / ;
U.S. Cl.
CPC ...
65 31 ; 65 42 ; 65 54 ; 65 55 ; 65 56 ; 65 61 ;
Abstract
A channel-type electron multiplier made in the shape of a glass wafer having holes through a central portion thereof, and an imperforate glass border fused to the periphery of the wafer, the wafer glass having a thermal coefficient of expansion less than that of the border glass. In manufacture, a brief fast cooling step aids in the production of a strong, permanent bond between wafer and border.