Patent CH-1915-72132

• Tech class: CPC B64C11/36: Blade pitch-changing mechanisms mechanical non-automatic
• Inventor location: Chexbres, Waadt, Switzerland (near Lausanne)
• Patent agency: Vertreter: Patentanwalts-Bureau, Ingenieur Kandyba, Bern

Patent family descending from Patent CH-1915-72132

• Patent CH-1915-72132 (English title: Device for adjusting the propeller blades in order to change their efficiency, National tech categories: CH 129c)
• Patent GB-1915-11834 (English title: A Device for Enabling the Angle of Propeller Blades to be Adjusted, Supplementary to patent: Patent CH-1915-72132)
• Patent FR-1915-483013 (English title: Device for straightening the blades of propulsion propellers to change the efficiency, Supplementary to patent: Patent CH-1915-72132, National tech categories: FR 6.4)

Sources

• Original patent document and bibliography entry at espacenet
• Bibliographic info on this patent and original patent document at DPMA

Year filed	1915
Year granted	1916
Office	FR
Patent number	483013
Inventors	François Schwendimann
Inventor country	CH
Applicant person	François Schwendimann
Applicant firm
Applicant type	INDIV
Applicant is inventor?	1
Original title	Einrichtung zum Verstellen der Propellerflügel, um ihren Wirkungsgrad zu ändern
English title	Device for adjusting the propeller blades in order to change their efficiency
Tech fields
Filing date	1915-07-28
Full specification filed date
Application number	483013D
Grant date	1916-06-16
Granted?	1
Publication date	1917-05-23
Supplementary to patent
Related to aircraft?	1
Serial number
Patent agent	Kandyba
Assigned to
National tech categories	CH 129c
IPCs
CPCs
Family year	1915
First filing?	1
Cites these patents
Citations from after 1930	0
Application ID	19300436
INPADOC family ID	5364996
Number of text pages	2
Number of diagram pages	1
Number of figures	2
Number of claims	3