Celebrity Inventors
Glam girl Heddy Lamar may have used her good looks to good effect on the silver screen, but she put her smarts to better use as an inventor. During World War II, she co-patented a frequency-switching system for torpedo guidance that was considered years ahead of its time.
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| Number | Title | Issue Date |
| 7318079 | Method and device for filtering a video signal A method and device operable per the method for high-pass filtering an input signal having a sequence of signal values to provide a high-pass filtered output signal having a sequence of filtered signal values. The method includes selecting a first signal value of th... | 01/08/2008 |
| 5255410 | Vacuum cleaner A vacuum cleaner generally has a working head which is positioned on the floor surface when the machine is in use. The working head of a vacuum cleaner essentially includes a rotating brush, a suction blower and a motor for operating both the brush and th... | 10/26/1993 |
