Patent GB-1911-5695
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From google patents description: "Screw propellers.-In a screw propeller the blades a, b, c are situated in different planes and are of increasing radius from front to rear, each blade being attached to a separate boss, and being symmetrically arranged on the shaft d."
- Tech class: CPC B64C11/48: Units of two or more coaxial propellers
- Inventor location: Wiener Neustadt, Lower Austria ; Gentleman
- We don't see the actual grant of the primary patent in Austria
- This 1921 source apparently refers to inventor Justus Pruner, or Conrad Justus Pruner, as an owner of a factory, supporting a railroad-car startup firm: [1]. The source itself is a journal whose name makes reference to aircraft flight: Verordnungs-Blatt für Eisenbahnen und Schiff- und Luftfahrt. Don't know if we've seen that source elsewhere.
Sources
- Original patent document and bibliography entry on espacenet
- on google patents
Year filed | 1911 |
---|---|
Year granted | 1911 |
Office | GB |
Patent number | 5695 |
Inventors | Justus Pruner |
Inventor country | AT |
Applicant person | Justus Pruner |
Applicant firm | |
Applicant type | INDIV |
Applicant is inventor? | 1 |
Original title | Screw Propeller |
English title | Screw Propeller |
Tech fields | propeller |
Filing date | 1911-03-07 |
Full specification filed date | |
Application number | 191105695D |
Grant date | 1911-11-02 |
Granted? | 1 |
Publication date | |
Supplementary to patent | Patent AT-1911-01-07-Pruner |
Related to aircraft? | 1 |
Serial number | |
Patent agent | Cruikshank & Fairweather, Limited |
Assigned to | |
National tech categories | |
IPCs | IPC B64C11/48 |
CPCs | CPC B64C11/48 |
Family year | 1911 |
First filing? | 0 |
Cites these patents | |
Citations from after 1930 | 1 |
Application ID | 23613267 |
INPADOC family ID | 11104308 |
Number of text pages | 2 |
Number of diagram pages | 1 |
Number of figures | 2 |
Number of claims | 1 |