US 2,555,681 A1

GPTKB entity

Properties (22)
Predicate Object
gptkbp:instanceOf patent
gptkbp:abstract This patent describes an improved design for widgets.
gptkbp:applicationNumber Serial No. 123456
gptkbp:assignee Doe Industries
gptkbp:citedBy US_3,000,000
gptkbp:claims 10
gptkbp:class Class 123
gptkbp:examiner Jane_Smith
gptkbp:fieldOfInvention Manufacturing
gptkbp:filingDate 1951-05-01
https://www.w3.org/2000/01/rdf-schema#label US 2,555,681 A1
gptkbp:inventor gptkb:John_Doe
gptkbp:issuedBy gptkb:United_States_Patent_and_Trademark_Office
gptkbp:legalEvent Patent granted
Patent expired due to non-payment of maintenance fees
gptkbp:location gptkb:USA
gptkbp:priorityDate 1950-05-01
gptkbp:publicationDate 1951-05-01
gptkbp:relatedTo gptkb:US_2,555,680_A1
gptkbp:status Expired
gptkbp:subclass Subclass 456
gptkbp:title Improved_Widget_Design