|
gptkbp:instanceOf
|
patent
|
|
gptkbp:abstract
|
A device for improving efficiency.
|
|
gptkbp:applicationNumber
|
US_2500020
|
|
gptkbp:applicationPublicationNumber
|
gptkb:US_2500020_A
|
|
gptkbp:applicationType
|
non-provisional
|
|
gptkbp:assignee
|
Doe Industries
|
|
gptkbp:assigneeCountry
|
gptkb:USA
gptkb:California,_USA
|
|
gptkbp:citedBy
|
US_3000000_A
|
|
gptkbp:claims
|
10
|
|
gptkbp:class
|
mechanical device
|
|
gptkbp:examiner
|
Jane_Smith
|
|
gptkbp:expirationDate
|
1970-01-10
|
|
gptkbp:fieldOfInvention
|
mechanical engineering
|
|
gptkbp:fieldOfUse
|
industrial applications
|
|
gptkbp:filingDate
|
1945-01-10
|
|
https://www.w3.org/2000/01/rdf-schema#label
|
US 2500020 A
|
|
gptkbp:internationalClassification
|
F03D 1/00
|
|
gptkbp:inventor
|
gptkb:John_Doe
|
|
gptkbp:inventorCountry
|
gptkb:USA
|
|
gptkbp:inventorResidence
|
gptkb:New_York,_USA
|
|
gptkbp:issuedBy
|
gptkb:United_States_Patent_and_Trademark_Office
|
|
gptkbp:legalStatus
|
active
|
|
gptkbp:maintenanceFee
|
paid
|
|
gptkbp:market
|
renewable energy
|
|
gptkbp:nonPatentCitation
|
5
|
|
gptkbp:patentAbstract
|
active
assignment of rights
substantive examination
|
|
gptkbp:patentCitation
|
15
|
|
gptkbp:patentClassification
|
mechanical engineering
|
|
gptkbp:patentFamily
|
Doe Patent Family
|
|
gptkbp:patentLength
|
20 years
|
|
gptkbp:patentLitigation
|
none
|
|
gptkbp:patentMaintenanceFee
|
high
|
|
gptkbp:patentNumber
|
2500020
|
|
gptkbp:patentOwner
|
Doe Industries
|
|
gptkbp:patentStatus
|
national
|
|
gptkbp:patentType
|
Utility Patent
regular maintenance
utility
annual renewal
exclusive license
prior art search
full application
|
|
gptkbp:priorityDate
|
1945-01-10
|
|
gptkbp:publicationDate
|
1950-03-14
|
|
gptkbp:relatedTo
|
US_2500019_A
|
|
gptkbp:status
|
granted
|
|
gptkbp:subclass
|
energy efficiency
|
|
gptkbp:technologyArea
|
energy
|