US 1357954

GPTKB entity

Statements (40)
Predicate Object
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