US 4821310 A

GPTKB entity

Properties (25)
Predicate Object
gptkbp:instanceOf patent
gptkbp:abstract A method and apparatus for controlling the operation of a computer system.
gptkbp:applicationNumber 07/071,198
gptkbp:applicationStatus granted
gptkbp:assignee gptkb:Houghton_Mifflin_Company
gptkbp:citedBy gptkb:US_5111400_A
US_5142540_A
US_5165110_A
US_5170450_A
US_5003680_A
gptkbp:examiner gptkb:John_Doe
gptkbp:fieldOfInvention computer systems
gptkbp:filingDate July 8, 1987
https://www.w3.org/2000/01/rdf-schema#label US 4821310 A
gptkbp:internationalClassification G06F 9/00
gptkbp:inventor gptkb:Robert_J._H._Houghton
gptkbp:issuedOn April 11, 1989
gptkbp:numberOfClaims 20
gptkbp:numberOfFigures 5
gptkbp:patentFamily US_4821310_A,_US_5003680_A,_US_5111400_A
gptkbp:patentType utility
gptkbp:priorityDate July 8, 1987
gptkbp:relatedTo computer technology
gptkbp:status expired
gptkbp:title Method and apparatus for controlling the operation of a computer system