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:
Jun. 13, 1978
Filed:
Sep. 11, 1964
Applicant:
Inventor:
Anthony V Fraioli, Essex Fells, NJ (US);
Assignee:
Galileo Electro-Optics Corp., Sturbridge, MA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01J / ;
U.S. Cl.
CPC ...
3131 / ; 328243 ; 250207 ; 2502 / ;
Abstract
1. An electron multiplier comprising wall means of secondary electron emissive material defining a spiral passage, means for providing a current flow through said wall means to supply electrons for secondary emission, a resistance means provided in said wall means and connected in parallel across a portion of the spiral passage defined by said wall means to provide more uniform current multiplication along said passage length.