US PATENT SUBCLASS 440 / 20
.~.~ With reversing means

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


440 /   HD   MARINE PROPULSION

13  DF  OSCILLATING PROPELLING MEANS {3}
17  DF  .~ Having nonpropelling cycle segment {3}
20.~.~ With reversing means

DEFINITION

Classification: 440/20

With reversing means:

(under subclass 17) Device wherein a means is provided to invert the propelling means in such a manner that the portion of the back and forth motion which supplies no motive force and the portion of the back and forth motion which supplies motive force can be interchanged.