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 |
| 7278847 | Dynamically configured 3-D object creation system with built-in printhead failure correction mechanism A three dimensional object creation system that prints objects layer by layer, the system including a plurality of printheads, the system printing at least part of each of multiple layers simultaneously, the system configured to enable at least one first printhead t... | 10/09/2007 |
| 6666626 | System for transporting sliders for zipper bags An apparatus (10) for and a method of transporting sliders to the slider insertion area (27) of a slider insertion device (18). A first sensor (30) on a sender track (20) detects a lack of sliders (21) in the sender track. A signal is sent from the first ... | 12/23/2003 |
| 6056455 | Programmable print head and multi-level encoding of print head data A printer has a print head with multiple nozzles and an encoder to encode print head data into firing bits used to determine various firing patterns of the print head nozzles. A decoder is integrated on the print head to decode the firing bits into firing... | 05/02/2000 |
| 4613241 | Printing mechanism for dot matrix printers A dot-type printer of the type using printing pins or wires is improved by employing a driving system which includes a variable-volume sealed container enclosing a pressure transmitting medium. Electrodes are disposed in the medium and are closely spaced ... | 09/23/1986 |
| 4572680 | Stamping apparatus for providing workpieces with different embossed marks Apparatus for stamping different embossed marks into metallurgical or rolled products comprises a plurality of juxtaposed punches, which are axially slidably mounted in a punch holder, and a punch actuator for actuating said punches. To permit a stamping ... | 02/25/1986 |
| 4326656 | Evacuated printing platen Printing platen for positioning a recording medium such as paper which includes an evacuated chamber having a slotted face plate for attracting, holding and guiding the paper. Slots are arranged parallel to each other and the direction of paper travel, an... | 04/27/1982 |
| 4160410 | Marking device utilizing dual rod power cylinder An imprint marking device utilizing transfer tape moved from a tape supply reel to a take-up reel across an imprint station with a moving marker head having raised indicia movable against the tape to press the tape against an article to be marked. A tape ... | 07/10/1979 |
| 4128345 | Fluid impulse matrix printer A printer is disclosed for use in printing indicia or the like on a sheet of recording medium by selective application of impulses of fluid. The printer comprises a sheet support mechanism, a print head, fluid supply means, a valve assembly, and an input ... | 12/05/1978 |
| 4027762 | Dot printer Each wire of a wire printer is driven by a separate pneumatic motor. Each motor is actuated by compressed air which is selectively passed through an electrically operated valve for each motor. Each valve is actuated by an electric signal indicating whethe... | 06/07/1977 |
| 4000803 | Vacuum-buffered bidirectional paper drive system A printer-plotter system includes a vacuum-buffered bidirectional paper drive system for moving paper uniformly forward and backward over a sprocketed platen and sprocketed drum. The platen comprises a stationary portion with a flat region and a rotatable... | 01/04/1977 |
| 3978966 | Tabulation operation sensing unit for automatic typewriter A unit for sensing a tabulation operation in an automatic typewriter. An interconnecting member is disposed between a typewriter mainspring and a fluid clutch. This member has a disk portion nested in a hole formed in a mainspring housing. An eccentric pi... | 09/07/1976 |