CH 128c

The Swiss patent classification of 1908 has a category 128, for Navigation, and within it a subclass 128c for Engins de propulsion mécanique (roues à palettes, hélices, propulseurs à reaction, etc.) pour bateaux, commande de ces engins. This wiki has 3 patents in category "CH 128c".

Patents in category CH 128c

• Patent CH-1911-58323 (English title: Propeller, Inventors: Henri-Marie Coandă, Supplementary to patent: Patent US-1914-1104963, Filing date: 1911-05-26)
• Patent CH-1912-61828 (English title: Process for the manufacture of a metal propeller with two blades, hollow and in one piece, Inventors: Pierre Jacomy • François Jahan, Supplementary to patent: Patent DE-1911-251309, Filing date: 1912-08-13)
• Patent CH-1919-85667 (English title: Device for attaching propeller blades to the shaft, Inventors: William Davey Oddy, Supplementary to patent: Patent GB-1918-05-01-Oddy • Patent GB-1918-05-20-Oddy, Filing date: 1919-06-07)

Enclosing categories	Swiss patent classifications, 1908-1920
Subcategories
Keywords	Propellers, Marine
Start year	1908
End year	1920