US 4,912,345 A

GPTKB entity

Properties (26)
Predicate Object
gptkbp:instanceOf patent
gptkbp:abstract A method for improving the efficiency of widgets.
gptkbp:applicationNumber 07/123,456
gptkbp:applicationType non-provisional
gptkbp:assignee gptkb:Acme_Corporation
gptkbp:citedBy gptkb:US_5,123,456_A
gptkbp:claims 10
gptkbp:coInventor gptkb:Alice_Johnson
gptkbp:examiner Jane_Smith
gptkbp:expirationDate April 3, 2007
gptkbp:fieldOfInvention widgets
gptkbp:filingDate September 30, 1987
gptkbp:firstClaim A widget comprising...
https://www.w3.org/2000/01/rdf-schema#label US 4,912,345 A
gptkbp:internationalClassification B23Q 11/00
gptkbp:inventor gptkb:John_Doe
gptkbp:issueDate April 3, 1990
gptkbp:issuedOn April 3, 1990
gptkbp:legalStatus active
gptkbp:maintenanceFee paid
gptkbp:patentFamily US_4,912,345_A,_US_5,123,456_A
gptkbp:patentType utility
gptkbp:priorityDate September 30, 1987
gptkbp:relatedPatent gptkb:US_4,567,890_A
gptkbp:status granted
gptkbp:title Method for improving widget efficiency