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gptkbp:instanceOf
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patent
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gptkbp:abstract
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This patent describes a method for improving efficiency in mechanical systems.
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gptkbp:applicationNumber
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gptkb:US_3,890,234
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gptkbp:applicationPublication
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gptkb:US_3,890,234_A1
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gptkbp:applicationType
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Non-Provisional
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gptkbp:assignee
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gptkb:Acme_Corporation
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gptkbp:citedBy
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gptkb:US_4,123,456_B2
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gptkbp:claims
|
20 claims
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gptkbp:class
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Mechanical_Systems
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gptkbp:examiner
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Jane_Smith
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gptkbp:expirationDate
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June 24, 1992
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gptkbp:fieldOfInvention
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Mechanical Engineering
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gptkbp:filingDate
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March 15, 1974
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https://www.w3.org/2000/01/rdf-schema#label
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US 3,890,234 B2
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gptkbp:internationalClassification
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F03G
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gptkbp:inventor
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gptkb:John_Doe
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gptkbp:inventorCountry
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gptkb:USA
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gptkbp:issueDate
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June 24, 1975
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gptkbp:issuedOn
|
June 24, 1975
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gptkbp:legalStatus
|
Granted
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gptkbp:maintenanceFee
|
Paid
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gptkbp:patentCitation
|
Cited by 10 other patents
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gptkbp:patentClassification
|
Class 123
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gptkbp:patentExpiration
|
Expired due to non-payment
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gptkbp:patentFamily
|
US_3,890,234_B2,_US_3,890,235_B2
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gptkbp:patentNumber
|
3,890,234
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gptkbp:patentOffice
|
gptkb:United_States_Patent_and_Trademark_Office
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gptkbp:patentType
|
Utility Patent
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gptkbp:priorityDate
|
January 1, 1973
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gptkbp:relatedPatent
|
gptkb:US_3,890,235_B2
|
|
gptkbp:status
|
Active
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gptkbp:subclass
|
Energy Efficiency
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gptkbp:title
|
Method for improving efficiency
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