US 4,000,022 B1

GPTKB entity

Statements (32)
Predicate Object
gptkbp:instanceOf patent
gptkbp:abstract A device for improving efficiency.
gptkbp:applicationNumber 05/588,123
gptkbp:applicationType non-provisional
gptkbp:assignee Example Corporation
gptkbp:citedBy 10
US_5,000,000
gptkbp:claims 20
gptkbp:class mechanical device
gptkbp:description This patent describes a novel mechanism.
gptkbp:examiner Jane_Smith
gptkbp:expirationDate 1994-12-28
gptkbp:fieldOfInvention mechanical engineering
gptkbp:filingDate 1975-05-30
gptkbp:firstClaim A device comprising...
https://www.w3.org/2000/01/rdf-schema#label US 4,000,022 B1
gptkbp:internationalClassification F03D 1/00
gptkbp:inventor gptkb:John_Doe
gptkbp:inventorCountry gptkb:USA
gptkbp:issueDate 1977-12-28
gptkbp:issuedBy gptkb:United_States_Patent_and_Trademark_Office
gptkbp:language English
gptkbp:legalStatus granted
gptkbp:maintenanceFee paid
gptkbp:patentFamily US_4,000,022_B1_family
gptkbp:patentInventor 20 years
gptkbp:patentNumber 4,000,022
gptkbp:patentType utility
gptkbp:priorityDate 1975-05-30
gptkbp:relatedTo US_3,000,000
gptkbp:status active
gptkbp:subclass energy efficiency