(under subclass 69) Apparatus wherein the impeller is (1) caused to follow a predetermined path or operation by relatively fixed guide means or (2) supported for movement about a pivot in the manner of an oar.
(1) Note. A claim to mere subcombination structure disclosed for use in supporting or connecting an oar in operative relation to a boat and not involving oar construction, blade features or feathering means is classified in subclasses 101+ of Class 440, Marine
Propulsion.
(2) Note. Classification of a claim to an oar is in Class 440, Marine Propulsion, regardless of impeller detail claimed, if specific boat structure or relationship is claimed and see the Class Definition of this Class 416 and notes thereunder for a general statement of the line.
