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:
Mar. 23, 1976
Filed:
Sep. 23, 1974
Applicant:
Inventor:
Patrick A Roberts, Hyattsville, MD (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A63F / ;
U.S. Cl.
CPC ...
2731 / ;
Abstract
A tangential spheres geometric puzzle uniquely formed from nine assembly pieces, of which eight pieces are based upon a triangular sphere array and a ninth piece based upon spheres disposed in a square array, providing a challenging educational and manipulative game. The pieces are assemblable into a tetrahedral pyramid.