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gptkbp:instanceOf
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patent
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gptkbp:abstract
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A method and apparatus for controlling fluid flow.
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gptkbp:applicationNumber
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Serial No. 682,123
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gptkbp:applicationPublication
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gptkb:US_2,890,490_A1
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gptkbp:applicationType
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Utility
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gptkbp:assignee
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The_United_States_of_America_as_represented_by_the_Department_of_the_Army
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gptkbp:citedBy
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US_3,000,000
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gptkbp:class
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Fluid control
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gptkbp:examiner
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gptkb:John_Doe
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gptkbp:fieldOfInvention
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Fluid control systems
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gptkbp:filingDate
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1958-08-30
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gptkbp:firstClaim
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A fluid control apparatus comprising...
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gptkbp:grantDate
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1959-06-30
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https://www.w3.org/2000/01/rdf-schema#label
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US 2,890,490 B2
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gptkbp:internationalClassification
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F16K_31/00
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gptkbp:inventor
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gptkb:William_H._McCulloch
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gptkbp:inventorCountry
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gptkb:USA
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gptkbp:issuedOn
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1959-06-30
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gptkbp:legalStatus
|
Granted
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gptkbp:maintenanceFee
|
Required
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gptkbp:numberOfClaims
|
10
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gptkbp:patentCitation
|
gptkb:US_2,890,489_B2
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gptkbp:patentExpiration
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1979-06-30
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gptkbp:patentFamily
|
US_2,890,490_B2,_US_2,890,489_B2
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gptkbp:patentLength
|
20 years
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gptkbp:patentNumber
|
2,890,490
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gptkbp:patentType
|
Utility Patent
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gptkbp:priorityDate
|
1957-08-30
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gptkbp:relatedPatent
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gptkb:US_2,890,489_B2
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gptkbp:status
|
Active
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gptkbp:title
|
Method of and apparatus for controlling the flow of fluids
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gptkbp:USClassification
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137/625
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