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:
Jan. 20, 1981
Filed:
Sep. 19, 1979
Applicant:
Inventors:
Pierre Gerlach, Paris, FR;
Roger Hoet, Paris, FR;
Assignee:
Thomson-CSF, Paris, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01J / ;
U.S. Cl.
CPC ...
29 2518 ;
Abstract
A flat grid of pyrolytic graphite is obtained by cutting a disc from a cylindrical blank followed by deformation under pressure and by means of a partial vacuum. The grid is then machined and stretched within a stressing frame which also serves to mount the grid within the electron tube.