US 500,123,551 B2

GPTKB entity

Properties (25)
Predicate Object
gptkbp:instanceOf patent
gptkbp:abstract A novel mechanism for improving efficiency.
gptkbp:applicationNumber 07/512,345
gptkbp:assignee gptkb:Acme_Corporation
gptkbp:citedBy US 600,123,456 B2
gptkbp:claims 20
gptkbp:class mechanical device
gptkbp:description This patent describes a mechanism for...
gptkbp:examiner Jane_Smith
gptkbp:expirationDate 2011-03-19
gptkbp:fieldOfInvention mechanical engineering
gptkbp:filingDate 1990-05-15
https://www.w3.org/2000/01/rdf-schema#label US 500,123,551 B2
gptkbp:internationalClassification F03D 1/00
gptkbp:inventor gptkb:John_Doe
gptkbp:issueDate 1991-03-19
gptkbp:issuedBy gptkb:United_States_Patent_and_Trademark_Office
gptkbp:legalStatus granted
gptkbp:maintenanceFee paid
gptkbp:patentFamily US 500,123,551 B2, US 600,123,456 B2
gptkbp:patentType utility
gptkbp:priorityDate 1989-05-15
gptkbp:relatedTo gptkb:US_400,123,456_B2
gptkbp:status active
gptkbp:subclass energy efficiency