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
- Patent 13421 document and bibliographic info on espacenet
- Patent 13421 at google patents
Year filed | 1855 |
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Year granted | 1855 |
Office | US |
Patent number | 13421 |
Inventors | Jacob Boyers |
Inventor country | US |
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Applicant type | |
Applicant is inventor? | 1 |
Original title | Churn |
English title | Churn |
Tech fields | churn, blades, screw, fluid flow |
Filing date | 1855 |
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Application number | |
Grant date | 1855-08-14 |
Granted? | 1 |
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Related to aircraft? | |
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National tech categories | USPC 416/200R |
IPCs | IPC A01H5/00, IPC A01H5/02 |
CPCs | CPC B63H1/12, CPC B64C11/48 |
Family year | 1855 |
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Cites these patents | |
Citations from after 1930 | |
Application ID | 45404043 |
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