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| Number | Title | Issue Date |
| 4727583 | Telephone transducer with improved frequency response An audio arrangement includes a thin speaker/transducer positioned within a portable housing wherein the speaker cavity is dimensioned to move the resonant frequency of the speaker/housing combination up to approximately the free-air cutoff frequency of t... | 02/23/1988 |
| 4641364 | Function coding via digital addresses in a two-way system Increased efficiency in the use of a communications channel between a Control Unit and a multiplicity of terminal or satellite units by utilizing the combinations of the unit address code words and their complements as coded commands and automatically ret... | 02/03/1987 |
| 4571595 | Dual band transceiver antenna A dual band antenna for a radio transceiver includes an inductively loaded conductor of a predetermined length with feedpoint located substantially central of the conductor. Radiator elements terminate the ends of the conductor and a ground plane terminat... | 02/18/1986 |
| 4490837 | AM Stereo to FM stereo converter A converter is coupled between the antenna and the RF stage of an FM stereophonic receiver to convert received AM stereo signals into FM stereo signals. A received AM stereo signal is translated to an IF signal, and decoded into two stereo signals. These ... | 12/25/1984 |
| 4486702 | Voltage regulator with non-linear excitation control An alternator regulator utilizes a non-linear, stepped ramp for use by a comparator which compares the ramp voltages with the alternator output and controls the switching of the excitation current accordingly. The non-linearity allows for tight control at... | 12/04/1984 |
| 4423468 | Dual electronic component assembly Two related miniature components are attached to opposite sides of an insulating base member. There are conductive pads and through-holes in the base member. The conductive areas on each component are wire-bonded to adjacent conductive areas on the base m... | 12/27/1983 |
| 4356389 | Bar code scanner interface The positive and negative peak detectors in the interface are reset during each input signal cycle and the reference level used for comparison is switched from one level to another to improve decoding accuracy, with each level determined by the previous t... | 10/26/1982 |
| 4310804 | Input activated frequency synthesizer A frequency synthesizer is controlled by the frequency of an input signal. The input signal is sampled and, either during or at the end of the input signal, the output signal is locked on the frequency of the input signal. Octavely related harmonics are c... | 01/12/1982 |
| 4288530 | Method of tuning apparatus by low power laser beam removal A thin film structure is provided with the capability of low-power laser tuning and trimming. Trim windows in a plated ground plane are incorporated to allow automated tuning procedures using relatively low-power lasers. The trim windows are conductive, b... | 09/08/1981 |
| 3947786 | Support structure for pushbutton radio tuner assembly An extremely rigid support structure for mounting the tuning coils and for guiding the movement of the core carriage, includes a coil case which is a one-piece molded element having integral indicator guide slot and core carriage guide rods, with the guid... | 03/30/1976 |
