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:
Sep. 18, 1979
Filed:
Mar. 31, 1977
Applicant:
Inventor:
Gunnar P Goransson, S-116 30 Stockholm, SE;
Assignee:
Other;
Primary Examiner:
Int. Cl.
CPC ...
A63B / ;
U.S. Cl.
CPC ...
273 / ;
Abstract
Racket with the racket head built up by crossing strings fastened to a frame, especially a tennis racket. Both the main surfaces of the racket head have a concave profile over at least a portion of each surface in at least one dimension of the racket head. The concave profile is provided by distance pieces or spaceers of different thicknesses inserted between the strings at various crossing points.