US 04,000,457 B2

GPTKB entity

Statements (32)
Predicate Object
gptkbp:instanceOf patent
gptkbp:abstract A device for improving efficiency.
gptkbp:applicationNumber 06/000,000
gptkbp:applicationType non-provisional
gptkbp:assignee Example Corporation
gptkbp:citedBy US_05,000,000_B2
gptkbp:claims 20
gptkbp:class mechanical device
gptkbp:description This patent describes a novel mechanism.
gptkbp:drawings 5
gptkbp:examiner Jane_Smith
gptkbp:expirationDate 1994-12-20
gptkbp:fieldOfInvention mechanical engineering
gptkbp:filingDate 1976-06-30
gptkbp:firstClaim A device comprising...
https://www.w3.org/2000/01/rdf-schema#label US 04,000,457 B2
gptkbp:internationalClassification F03G
gptkbp:inventor gptkb:John_Doe
gptkbp:inventorCountry gptkb:USA
gptkbp:issueDate 1977-12-20
gptkbp:issuedBy gptkb:United_States_Patent_and_Trademark_Office
gptkbp:keywords efficiency, device, mechanical
gptkbp:legalStatus granted
gptkbp:maintenanceFee paid
gptkbp:patentFamily US_04,000,457
gptkbp:patentLength 20 years
gptkbp:patentNumber 4000457
gptkbp:patentType utility
gptkbp:priorityDate 1975-06-30
gptkbp:relatedTo gptkb:US_04,000,456_B2
gptkbp:status active
gptkbp:subclass energy efficiency