An aircraft having vertical takeoff and landing capability provided with at least first and second laterally extending paddle wheels rotatable on a central axis perpendicular to the longitudinal axis of the aircraft fuselage and between its nose and tail.
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| Number | Title | Issue Date |
| 4290355 | Ticket printing and advancing device The invention provides a device for printing and advancing tickets from a roll with various advance distances achieved with the aid of a single cam and cam follower together with an electronically operated stop which limits the movements of the follower a... | 09/22/1981 |
| 4262593 | Printing apparatus A printing apparatus especially for a cash register has printing wheels mounted on a shaft with a spring pressed friction detent means between the shaft and each wheel so that the wheels are positively driven but can overrun the detent means when they are... | 04/21/1981 |