US 4,321,110 B1

GPTKB entity

Statements (25)
Predicate Object
gptkbp:instanceOf patent
gptkbp:abstract A novel mechanism for improving efficiency.
gptkbp:applicationNumber 06/197,123
gptkbp:assignee gptkb:Acme_Corporation
gptkbp:citedBy gptkb:US_5,123,456_B2
gptkbp:claims 20
gptkbp:class mechanical device
gptkbp:description This patent describes a mechanism for...
gptkbp:examiner Jane_Smith
gptkbp:expirationDate 2002-03-30
gptkbp:fieldOfInvention mechanical engineering
gptkbp:filingDate 1980-12-15
https://www.w3.org/2000/01/rdf-schema#label US 4,321,110 B1
gptkbp:internationalClassification F03G
gptkbp:inventor gptkb:John_Doe
gptkbp:issueDate 1982-03-30
gptkbp:issuedBy gptkb:United_States_Patent_and_Trademark_Office
gptkbp:legalStatus granted
gptkbp:maintenanceFee paid
gptkbp:patentFamily US_4,321,110_B1,_US_4,321,111_B1
gptkbp:patentType utility
gptkbp:priorityDate 1980-12-15
gptkbp:relatedTo US_4,000,000_A
gptkbp:status active
gptkbp:subclass energy conversion