Applications in Class 180/7.4

Matches 1 - 2 out of 2

Match	Document	Document Title
1	US20060201721	Rotary propeller Disclosed is a rotary propeller having a rotor 3 rotating in a duct 1 and a plurality of blades 5, 7 secured to the rotor. The blades comprise apertured blades 5A, 5B, 5C and non-apertured blades...
2	US20060207808	Counterintuitive Physics Demonstration Mechanism A vehicle designed to harness the kinetic energy of a stream of gas or liquid aimed in a constant direction toward its front end, with the surprising and educational result that it moves into the...

Matches 1 - 2 out of 2