US 3,678,858 B1

GPTKB entity

Statements (53)
Predicate Object
gptkbp:instanceOf patent
gptkbp:abstract A device for improving efficiency.
gptkbp:applicationDate 1971-05-10
gptkbp:applicationNumber US_3,678,858
gptkbp:applicationType non-provisional
gptkbp:assignee gptkb:Acme_Corporation
gptkbp:citedBy gptkb:US_4,123,456
gptkbp:claims 20
gptkbp:class mechanical device
gptkbp:examiner Jane_Smith
gptkbp:fieldOfInvention mechanical engineering
gptkbp:fieldOfUse industrial applications
gptkbp:filingDate 1971-05-10
https://www.w3.org/2000/01/rdf-schema#label US 3,678,858 B1
gptkbp:internationalClassification F03D 1/00
gptkbp:inventor gptkb:John_Doe
gptkbp:inventorCountry gptkb:USA
gptkbp:issueDate 1972-07-18
gptkbp:issuedBy gptkb:United_States_Patent_and_Trademark_Office
gptkbp:legalStatus granted
gptkbp:location gptkb:USA
gptkbp:maintenanceFee paid
gptkbp:patentAbstract Renewable energy technology.
A device designed to enhance energy efficiency.
Filed in 1971.
gptkbp:patentAssignee Acme_Corporation.
gptkbp:patentCitation Cited by other patents.
Issued in 1972.
US_3,456,789
gptkbp:patentClassification F03D.
gptkbp:patentExpiration 1992-07-18
gptkbp:patentFamily US_3,678,858_B1,_US_3,456,789,_US_4,123,456
gptkbp:patentFamilyMembers Includes_US_3,456,789.
gptkbp:patentField Used in industrial applications.
Energy efficiency devices.
gptkbp:patentInventor Examined_by_Jane_Smith.
John_Doe.
USA.
gptkbp:patentLength 20 years
gptkbp:patentMaintenanceFee Maintenance fees paid.
gptkbp:patentNumber 3,678,858
gptkbp:patentOwner gptkb:Acme_Corporation
gptkbp:patentStatus Granted.
In force.
gptkbp:patentType utility
Utility patent for a mechanical device.
Related to other patents.
Filed under non-provisional.
gptkbp:priorityDate 1970-05-10
gptkbp:relatedTo US_3,456,789
gptkbp:status active
gptkbp:subclass energy efficiency
gptkbp:technologyArea renewable energy