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:
Apr. 25, 2000
Filed:
Jun. 18, 1998
Applicant:
Inventor:
Michael C Wood, Orinda, CA (US);
Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G09B / ;
U.S. Cl.
CPC ...
434348 ; 434322 ; 434327 ; 434331 ; 434349 ;
Abstract
A learning device comprises a receptacle for holding an information bearing card. The information bearing cards include a problem and a coded answer. The receptacle of the learning device includes a decoding display window with a movable writing screen which may be moved to cover or uncover the decoding display window. The user can insert the information bearing cards into the receptacle, write down a response on the writing screen with the display window covered, and compare their response with the correct answer by moving the movable writing screen to reveal the decoded answer through the decoding display window.