"It is my heart-warmed and world-embracing Christmas hope and aspiration that all of us, the high, the low, the rich, the poor, the admired, the despised, the loved, the hated, the civilized, the savage (every man and brother of us all throughout the whole earth), may eventually be gathered together in a heaven of everlasting rest and peace and bliss, except the inventor of the telephone. "
Mark Twain ; Christmas greetings, 1890
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| Number | Title | Issue Date |
| 5045728 | Trinary to binary level conversion circuit An electronic circuit for converting trinary level input signals on a first line into binary level signals on two or more output lines using contemporary CMOS field effect transistor integrated circuits. According to one embodiment, conversion is accompli... | 09/03/1991 |
| 5018982 | Adapter for stacking printed circuit boards A standoff and retainer for use in mechanically and electrically connecting two or more printed circuit boards in a parallel spaced type arrangement. The metallic standoff is constructed in the form of a sleeve partially closed at one end. The plastic ret... | 05/28/1991 |
| 5016014 | High accuracy analog-to-digital converter with rail-to-rail reference and input voltage ranges An analog-to-digital inverter includes successive approximation control logic for generating ten-bit binary numbers, a digital-to-analog converter (DAC) having a resistor string and a weighted-capacitor array for converting the ten-bit binary output of th... | 05/14/1991 |
| 5012232 | Bit mapped memory plane with character attributes for video display A video display controller for controlling the display of characters stored in a bit plane memory. The characters to be displayed are arranged in the bit plane memory in a set number of scan lines with a set number of data bits in each scan line. Attribut... | 04/30/1991 |
| 4931920 | Circuit and method for regulating output voltage of a switch mode power supply having a current mode magnetic amplifier A circuit for regulating the output voltage of a switched mode power supply having a current mode magnetic amplifier includes a current transformer for sensing current flow through the magnetic amplifier. The sensed current is provided to a circuit which ... | 06/05/1990 |
| 4929185 | Printed circuit board assembly The subject invention is a device for joining and separating first and second printed circuit boards connectable by a socket on one of the boards and a plurality of pins projecting from the other of the boards. The device comprises a screw held captive to... | 05/29/1990 |
| 4928290 | Circuit for stable synchronization of asynchronous data A circuit for the stable synchronization of an asynchronous data signal. The circuit comprises a first latch for receiving a first asynchronous data signal, a first delayed system clock signal, and a synchronized reset signal and for providing a system cl... | 05/22/1990 |
| 4928218 | Switch mode power supply start-up circuit A switch mode power supply includes an AC to DC converter, a pulse width modulator for generating a series of pulses to control the switching of the DC across the primary winding of a transformer, and a start-up circuit connecting the AC to a power input ... | 05/22/1990 |