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 |
| 6623145 | Light source device A light source device includes a discharge lamp having a tubular transparent bulb with sealed opposite ends for generating discharged light near a light emission center thereof, and a reflecting mirror having a reflecting surface which has a curved surfac... | 09/23/2003 |
| 5994823 | High-pressure discharge lamp, turning-on circuit device, and lighting fixture A high-pressure discharge lamp includes an external tube, and two luminescent tubes which extend in the tube axis direction in such a manner that one tube twists with respect to the other or vice versa and which are close to each other at least at one end... | 11/30/1999 |
| 5726351 | Spark plug comprising a force measuring element A spark plug with an insulating body held in a casing and containing an inner electrode is provided with a force-measuring element for measuring the pressure acting on the spark plug, the insulating body resting against the casing via the force-measuring ... | 03/10/1998 |
| 5659133 | High-temperature optical combustion chamber sensor The disclosure describes a high-temperature optical transducer capable of acquiring input variables for closed-loop control of combustion systems. The key components of the innovation are a high-temperature, embedded photodiode, the use of low-cost, integ... | 08/19/1997 |
| 5500571 | Metal vapor discharge lamp A metal vapor discharge lamp includes an arc tube having on an inner surface a coating of multi-layer construction including a layer preferably facing the interior discharge space of the arc tube and formed with a strongly covalent bonded material and at ... | 03/19/1996 |
| 5276379 | Arc discharge lamp having cementless base members An arc discharge lamp including an electrically insulative base member securely positioned at opposite ends of the lamp without the need for basing cements or the like. The base member includes at least one internally-protruding segment for positioning wi... | 01/04/1994 |
| 4504891 | Fluorescent lamp system A fluorescent lamp system including a pair of fluorescent lamp socket bars, a pair of ballast transformers, and a wiring harness. Each lamp socket bar consists of a sandwich of a molded plastic plate which holds the lamp socket contacts and the wiring con... | 03/12/1985 |
| 4361370 | Apparatus and method for cleaning shadow masks in color picture tubes The present invention provides an improvement in shadow mask type color picture tubes. The improvement comprises a ferromagnetic member located within a tube and means for holding the ferromagnetic member within the tube. The invention also encompasses a ... | 11/30/1982 |
| 4224551 | Vehicle headlight with a dirt sensor A vehicle headlight is disclosed comprising a dirt sensor for sensing dirt on a diffuser disk of the headlight. The dirt sensor receives the light of a lamp of the headlight scattered back due to dirt on the diffuser disk and is shielded against the light... | 09/23/1980 |
| 3961217 | Gaseous discharge display panel having two color bar display The display panel comprises a gas-filled envelope containing an array of line-like glow cathodes. Circuit means is coupled to the panel to scan the array of cathodes and to energize a number of cathodes determined by the magnitude of an input analog signa... | 06/01/1976 |
