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Actor Zeppo Marx patented a "Cardiac Pulse Rate Monitor" in 1969.
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| Number | Title | Issue Date |
| 7468648 | Magnetic device A magnetic device to be surface mounted on a substantially planar thermally conductive surface comprises a circuit board containing a winding pattern having at least one winding and a magnetic core that is at least partially encompassing the winding pattern. On a bo... | 12/23/2008 |
| 7450402 | Soft switching high efficiency flyback converter DC-DC converters such as flyback converters achieve self-regulation by communication information between primary and secondary circuits through the power transformer. Operating in accordance with a generalized concept or algorithm, the converter can be bi-directiona... | 11/11/2008 |
| 7429908 | Coil form A coil form for forming an inductive element (10) includes a coil body (2) and at least one, for example three separating plates (3). The coil body (2) has an opening (4.1) and includes two portions, a coil portion (6) and a... | 09/30/2008 |
| 7423871 | Electric device with improved cooling and casing therefor The casing of a power supply includes a bottom and a cover. Both of them have a U-like shape. Since the cover is slightly wider than the bottom two air ducts are provided between the side plates of the bottom and the corresponding side plates of the cover respective... | 09/09/2008 |
