US 3,000,031 B2

GPTKB entity

Properties (24)
Predicate Object
gptkbp:instanceOf patent
gptkbp:abstract A device for improving efficiency.
gptkbp:applicationNumber US_1234567
gptkbp:assignee Example Corporation
gptkbp:citedBy US_4,000,000_B2
gptkbp:claims 20
gptkbp:class mechanical device
gptkbp:examiner Jane_Smith
gptkbp:expirationDate 1981-09-26
gptkbp:fieldOfInvention mechanical engineering
gptkbp:filingDate 1957-05-01
https://www.w3.org/2000/01/rdf-schema#label US 3,000,031 B2
gptkbp:internationalClassification F03G
gptkbp:inventor gptkb:John_Doe
gptkbp:issueDate 1961-09-26
gptkbp:issuedBy gptkb:United_States_Patent_and_Trademark_Office
gptkbp:legalStatus granted
gptkbp:maintenanceFee paid
gptkbp:patentFamily US_3,000,031_B2,_US_3,000,032_B2
gptkbp:patentType utility
gptkbp:priorityDate 1956-05-01
gptkbp:relatedTo US_2,000,000_B2
gptkbp:status active
gptkbp:subclass energy conversion