US 3,123,440 B1

GPTKB entity

Properties (24)
Predicate Object
gptkbp:instanceOf patent
gptkbp:abstract A novel mechanism for improving efficiency.
gptkbp:applicationNumber US_2,123,456
gptkbp:assignee gptkb:Acme_Corporation
gptkbp:citedBy US_4,567,890
gptkbp:claims 10
gptkbp:class mechanical device
gptkbp:examiner Jane_Smith
gptkbp:fieldOfInvention mechanical engineering
gptkbp:filingDate 1962-01-10
https://www.w3.org/2000/01/rdf-schema#label US 3,123,440 B1
gptkbp:internationalClassification F03G
gptkbp:inventor gptkb:John_Doe
gptkbp:issueDate 1964-03-03
gptkbp:issuedBy gptkb:United_States_Patent_and_Trademark_Office
gptkbp:legalStatus granted
gptkbp:maintenanceFee paid
gptkbp:patentFamily US_3,123,440_B1,_US_3,456,789,_US_4,567,890
gptkbp:patentLength 20 years
gptkbp:patentType utility
gptkbp:priorityDate 1961-01-10
gptkbp:relatedTo US_3,456,789
gptkbp:status active
gptkbp:subclass energy conversion