Patent GB-1909-21220

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Year filed 1909
Year granted 1909
Office GB
Patent number 21220
Inventors James Dennis Roots
Inventor country GB
Applicant person James Dennis Roots
Applicant firm
Applicant type INDIV
Applicant is inventor? 1
Original title
English title
Tech fields
Filing date 1909-09-16
Full specification filed date
Application number 190921220D
Grant date
Granted? 1
Publication date
Supplementary to patent
Related to aircraft? Yes
Serial number
Patent agent
Assigned to
National tech categories
CPCs CPC B64C25/06, CPC B64F2700/6226, CPC B64C25/62, CPC B64C25/50
Family year 1909
First filing? 1
Cites these patents
Citations from after 1930
Application ID 23587760
INPADOC family ID 11082181
Number of text pages
Number of diagram pages
Number of figures
Number of claims