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Lawrence Welk, the bandleader who entertained millions of Americans over a generation of broadcasting his TV show, once received a patent: for a music-themed design of an ashtray.
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| Number | Title | Issue Date |
| 6014111 | Ferrite crossed-loop antenna of optimal geometry and construction and method of forming same A novel loop antenna containing a thin-walled ferrite box or other hollow; magnetic core structure of high permeability (considerably greater than 100), particularly useful for crossed loop antennas, and of optimal geometry and configuration for minimum v... | 01/11/2000 |
| 5952735 | Method of and apparatus for optimizing the matching of pulse generators driving high "Q" tuned loads, by phase splitting A technique for optimizing the impedance match between a plurality of pulse generators and a high-Q tuned load by equally advancing and retarding the phase of equal groups of pulse generator modules with respect to the load voltage. The sum output current... | 09/14/1999 |
| 5734544 | Solid-state pulse generating apparatus and method particularly adapted for ion implantation A relatively wide d.c. pulse generating system providing rise times normally attainable only with much narrower pulse width generation, comprising a plurality of sequentially operated groups of d.c. pulse generating modules achieving the combination of ze... | 03/31/1998 |
| 5563611 | Method of and apparatus for integration of Loran-C and satellite navigation system (SNS) technologies for improved system accuracy, availability and integrity A method of apparatus for integrating Loran-C and satellite navigation system technologies in a manner in which the Loran-C navigation signal transmissions are further modulated to provide a communications signal and a supplemental navigation signal, time... | 10/08/1996 |
| 5380962 | High-power RF switch The invention relates to a novel high-speed actuated high-voltage RF switch for such purposes as the cold switching of short very high current RF pulses in applications such as solid-state Loran-C transmitters and the like, as for switching between coupli... | 01/10/1995 |
| 4800391 | Method of and apparatus for message communication on Loran-C navigational signal broadcasts and the like with reduced navigation errors In a Loran-C message communication system a method of obviating errors in navigation locking caused by sampling reception at the conventional symmetrical pulse modulation time intervals in advance of and in delay from the normal transmission interval, thr... | 01/24/1989 |
| 4767999 | Method of and apparatus for radio-frequency generation in resonator tank circuits excited by sequential pulses of alternately opposite polarity A method of and apparatus for exciting harmonic generation of radio frequency in a tank resonant circuit by bipolar spaced, half-cycle pulses, wherein the period of the tank resonant frequency oscillations is 1/N the period between successive pulses of si... | 08/30/1988 |
| 4743912 | Method of and apparatus for reducing cycle slippage errors in Loran-C and similar radio-frequency signal reception, particularly in vehicles undergoing acceleration Method and apparatus of obviating cycle-locking slippage errors in reception of Loran-C and similar radio-frequency signals covered by receiver location acceleration effects and other distortion effects simulating the same, that comprises, receiving the r... | 05/10/1988 |
| 4689803 | Antenna tuning system and method A dynamic antenna tuning system particularly adapted for VLF frequency-shift (as opposed to on-off) keyed transmitters, employing saturable magnetic switching amplifiers providing variable tuning inductance between the antenna and transmitter and controll... | 08/25/1987 |
| 4674022 | SCR priming and sweep-out circuit apparatus An improved priming and sweep-out circuit in which losses are obviated or minimized by transferring energy resulting from such processes back to the power supply, and wherein a single common storage inductance is used in a secondary winding circuit of a s... | 06/16/1987 |
