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Actor Zeppo Marx patented a "Cardiac Pulse Rate Monitor" in 1969.
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| Number | Title | Issue Date |
| 6783251 | Image modification effects for image projection lighting devices A stage lighting apparatus includes a lamp and a first light valve, which cooperate to project a first image and a second image wherein the second image is created by applying a function to a plurality of pixels of the first image. The plurality of pixels of the fir... | 08/31/2004 |
| 5850269 | Liquid crystal display device wherein each scanning electrode includes three gate lines corresponding separate pixels for displaying three dimensional image In a liquid crystal display device for displaying a three dimensional image, it is possible to obtain a three dimensional image having appropriate colors corresponding to the colors of objects wherein the data lines are not shown in the picture, the color... | 12/15/1998 |
| 5243413 | Color parallax-free camera and display Improved image quality is realized in a parallax-free teleconferencing display by increasing the camera light budget, that is, by increasing the light available to the camera, while maintaining a common optic axis between the camera and the display screen... | 09/07/1993 |
