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:
Aug. 13, 1991
Filed:
Oct. 11, 1989
Applicant:
Inventors:
Richard H Anderson, Trabuco Canyon, CA (US);
Robert R Anderson, Trabuco Canyon, CA (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B43L / ;
U.S. Cl.
CPC ...
33 212 ; 33 2711 ; 33 181 ;
Abstract
A three-dimensional drawing device comprising a transparent hollow globe, a powder material disposed within the globe which adheres to the inner surface of the globe, a scribe disposed within the globe which can be used to draw upon the inner surface of the globe by scraping off the powder material, and controls for manipulating the scribe. The device can be used to form three-dimensional sketches and is primarily intended for use as a teaching aid and toy.