Patent US-1855-13421

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Tech categories:

  • CPC B63H1/12: Propulsive elements directly acting on water of rotary type with rotation axis substantially in propulsive direction
  • CPC B64C11/48: Units of two or more coaxial propellers
  • Inventor location: Granville, in the county of Monongahela and State of Virginia, US

Sources


Year filed 1855
Year granted 1855
Office US
Patent number 13421
Inventors Jacob Boyers
Inventor country US
Applicant person
Applicant firm
Applicant type
Applicant is inventor? 1
Original title Churn
English title Churn
Tech fields churn, blades, screw, fluid flow
Filing date 1855
Full specification filed date
Application number
Grant date 1855-08-14
Granted? 1
Publication date
Supplementary to patent
Related to aircraft?
Serial number
Patent agent
Assigned to
National tech categories USPC 416/200R
IPCs IPC A01H5/00, IPC A01H5/02
CPCs CPC B63H1/12, CPC B64C11/48
Family year 1855
First filing?
Cites these patents
Citations from after 1930
Application ID 45404043
INPADOC family ID
Number of text pages
Number of diagram pages
Number of figures
Number of claims