US 4,978,901 L9

URI: https://gptkb.org/entity/US_4%2C978%2C901_L9
GPTKB entity
Statements (34)
Predicate Object
gptkbp:instanceOf patent
gptkbp:abstract A method for improving efficiency in mechanical systems.
gptkbp:applicationNumber 07/407,123
gptkbp:applicationType Non-Provisional
gptkbp:assignee gptkb:Acme_Corporation
gptkbp:citedBy US_5,123,456
gptkbp:claims 20
gptkbp:class Mechanical_Systems
gptkbp:documentType Patent Document
gptkbp:examiner Jane_Smith
gptkbp:expirationDate December 18, 2007
gptkbp:fieldOfInvention Mechanical Engineering
gptkbp:fieldOfUse Industrial Applications
gptkbp:filingDate April 10, 1989
https://www.w3.org/2000/01/rdf-schema#label US 4,978,901 L9
gptkbp:internationalClassification F03G
gptkbp:inventor gptkb:John_Doe
gptkbp:inventorCountry gptkb:USA
gptkbp:issuedBy December 18, 1990
gptkbp:language English
gptkbp:legalStatus Granted
gptkbp:location gptkb:United_States
gptkbp:maintenanceFee Paid
gptkbp:patentCitation gptkb:US_4,123,456
gptkbp:patentFamily US_4,978,901_Family
gptkbp:patentNumber 4,978,901
gptkbp:patentStatus Active
gptkbp:patentType Utility Patent
gptkbp:priorityDate June 15, 1989
gptkbp:publicationNumber gptkb:US_4,978,901
gptkbp:relatedPatent US_4,567,890
gptkbp:status Active
gptkbp:subclass Energy Efficiency
gptkbp:title Method for improving efficiency