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:
Dec. 15, 1987
Filed:
Oct. 09, 1984
Applicant:
Inventors:
Arun K Agarwal, Chelmsford, MA (US);
Suzanne C Knapp, Lowell, MA (US);
David R Lakness, Chelmsford, MA (US);
Assignee:
Wang Laboratories, Inc., Lowell, MA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F / ; G06F / ; G06F / ; G06F / ;
U.S. Cl.
CPC ...
364200 ; 364300 ;
Abstract
A data structure for use in a document processing system corresponds to a document comprised of one or more Pages. Each Page is subdivided into one or more nonoverlapping Areas, each Area in turn being comprised of one or more types of Layers. Each Layer type is expressive of a particular type of information such as text or graphics information. Different Layer types may be superimposed to comprise the contents of an Area.