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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:applicationDate
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1957-01-02
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gptkbp:applicationNumber
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US_3,000,490
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gptkbp:applicationType
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Non-provisional
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gptkbp:assignee
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gptkb:The_United_States_of_America
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gptkbp:citedBy
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US_3,500,000
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gptkbp:class
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Fluid control
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gptkbp:country
|
gptkb:United_States
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gptkbp:examiner
|
gptkb:John_Doe
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gptkbp:expirationDate
|
1978-09-26
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gptkbp:fieldOfInvention
|
Fluid control systems
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gptkbp:filingDate
|
1957-01-02
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gptkbp:firstClaim
|
A feedback loop.
A method for controlling fluid flow.
An apparatus for controlling fluid flow.
A control system.
A valve mechanism.
A method of fluid regulation.
An actuator.
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gptkbp:grantDate
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1961-09-26
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https://www.w3.org/2000/01/rdf-schema#label
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US 3,000,490 B1
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gptkbp:inventor
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gptkb:William_H._McCulloch
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gptkbp:inventorResidence
|
American
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gptkbp:issuedOn
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1961-09-26
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gptkbp:language
|
English
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gptkbp:legalStatus
|
Lapsed
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gptkbp:maintenanceFee
|
Not paid
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gptkbp:ninthClaim
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A control valve.
A flow meter.
A pressure sensor.
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gptkbp:numberOfClaims
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10
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gptkbp:numberOfFigures
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5
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gptkbp:patentFamily
|
US_3,000,490
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gptkbp:patentOffice
|
gptkb:USPTO
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gptkbp:patentType
|
Utility patent
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gptkbp:priorityDate
|
1956-12-31
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gptkbp:publications
|
B1
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gptkbp:relatedTo
|
US_2,800,000
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gptkbp:status
|
Expired
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gptkbp:subclass
|
Control systems
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gptkbp:title
|
Method of and apparatus for controlling the flow of fluids
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