gptkbp:instanceOf
|
patent
|
gptkbp:abstract
|
This invention relates to a method of and apparatus for producing a vacuum.
|
gptkbp:applicationNumber
|
gptkb:US_1357954_A
|
gptkbp:applicationStatus
|
completed
|
gptkbp:applicationType
|
utility
|
gptkbp:assignee
|
gptkb:Houghton_&_Houghton
|
gptkbp:citedBy
|
US_1450000
|
gptkbp:claims
|
10 claims
|
gptkbp:class
|
F04B 53/00
|
gptkbp:examiner
|
gptkb:John_Doe
|
gptkbp:fieldOfUse
|
industrial machinery
|
gptkbp:filingDate
|
1919-01-06
|
https://www.w3.org/2000/01/rdf-schema#label
|
US 1357954
|
gptkbp:inventiveStep
|
yes
|
gptkbp:inventor
|
gptkb:William_H._H._Houghton
|
gptkbp:issueDate
|
1920-10-19
|
gptkbp:legalStatus
|
granted
|
gptkbp:location
|
gptkb:United_States
|
gptkbp:maintenanceFee
|
paid
|
gptkbp:novelty
|
yes
|
gptkbp:patentAbstract
|
A method and apparatus for creating a vacuum.
|
gptkbp:patentCitation
|
available
US_1234567
|
gptkbp:patentClassification
|
mechanical engineering
|
gptkbp:patentExpiration
|
1997-10-19
|
gptkbp:patentFamily
|
Houghton_vacuum_patents
|
gptkbp:patentImage
|
image_url_here
|
gptkbp:patentLink
|
https://patents.google.com/patent/US1357954A/en
|
gptkbp:patentLitigation
|
none
|
gptkbp:patentMaintenanceFee
|
PDF_available
|
gptkbp:patentNumber
|
1357954
|
gptkbp:patentOffice
|
gptkb:USPTO
|
gptkbp:patentType
|
granted patent
|
gptkbp:priorityDate
|
1918-01-06
|
gptkbp:relatedPatent
|
gptkb:US_1357955
|
gptkbp:relatedTo
|
vacuum technology
|
gptkbp:status
|
expired
|
gptkbp:subclass
|
F04B 53/02
|
gptkbp:technicalField
|
engineering
|
gptkbp:title
|
Method of and apparatus for producing a vacuum
|