US 440,987,621 B2

URI: https://gptkb.org/entity/US_440%2C987%2C621_B2
GPTKB entity
Properties (28)
Predicate Object
gptkbp:instanceOf patent
gptkbp:abstract A novel mechanism for improving efficiency.
gptkbp:applicationNumber 06/397,123
gptkbp:applicationType non-provisional
gptkbp:assignee gptkb:XYZ_Corporation
gptkbp:assigneeCountry gptkb:USA
gptkbp:citedBy gptkb:US_450,123,456_B2
gptkbp:claims 20
gptkbp:class mechanical device
gptkbp:examiner Jane_Smith
gptkbp:fieldOfInvention mechanical engineering
gptkbp:filingDate 1982-06-30
gptkbp:firstClaim A mechanism comprising...
https://www.w3.org/2000/01/rdf-schema#label US 440,987,621 B2
gptkbp:internationalClassification F03G
gptkbp:inventor gptkb:John_Doe
gptkbp:inventorCountry gptkb:USA
gptkbp:issueDate 1983-10-11
gptkbp:issuedBy gptkb:United_States_Patent_and_Trademark_Office
gptkbp:legalStatus granted
gptkbp:maintenanceFee paid
gptkbp:patentFamily US_440,987,621_B2,_US_440,987,620_B1
gptkbp:patentLength 20 years
gptkbp:patentType utility
gptkbp:priorityDate 1981-06-30
gptkbp:relatedTo US_440,987,620_B1
gptkbp:status active
gptkbp:subclass energy conversion