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 |
| 4449103 | High power class B modulation amplifier for a broadcast transmitter A method for amplifying electric signals, an amplifier circuit and application of this amplifier circuit as the modulator stage of a subsequent amplifier, employing a variable anode voltage for the purpose of improving the efficiency of amplifiers and par... | 05/15/1984 |
| 4335363 | Amplitude modulator using a carrier tube and a peaking tube An amplitude modulator in which a radio frequency amplifier is arranged to produce a high power amplitude modulated radio frequency signal in a particularly efficient manner. The amplifier inlcudes two tetrode tubes, one of which is arranged to conduct co... | 06/15/1982 |
