Did You Know...
...that two musicians were responsible for the invention of color print film? Fascinated by photography, Leopold Godowsky and Leopold Mannes worked together to produce an easy-to-use, practical color film. They worked full time as music teachers and gave concerts while experimenting during their off hours in Mannes' kitchen. Their success earned them full-time, well-paying jobs at Kodak and their efforts resulted in Kodachrome film, which was introduced in 1935.
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| Number | Title | Issue Date |
| 4487149 | Steering package for vessels A steering thruster for a vessel includes an oil-filled reversible submergible motor driving a reversible-thrust screw. The motor is mounted on a bracket structure at the stern of the vessel and is preferably suspended from a swim platform on the vessel t... | 12/11/1984 |
| 4455962 | Spherical underwater vehicle A spherical vehicle for operation in a fluid medium utilizes an actuator disk or propeller of approximately half the diameter of the sphere for propulsion. In addition to providing the energy for driving the sphere, the actuator disk acts to draw the flow... | 06/26/1984 |
| 4223625 | Outboard thruster for boats An outboard thruster for use in maneuvering a marine vessel at low speeds, particularly during docking or fishing operations. The apparatus includes a motor-propeller unit which is normally stowed aboard a vessel. The motor-propeller unit is lowered into ... | 09/23/1980 |
