Did You Know...
...that several people are credited with the invention of the flush toilet? Most people have heard of Thomas Crapper (1837-1910), the sanitary engineer who invented the valve-and-siphon arrangement that made the modern toilet possible. Another claimant to "the throne" was British inventor Alexander Cumming who patented a toilet in 1775. Then there's a nameless Minoan (a native of ancient Crete) who lived 4,000 years ago who supposedly was ahead of his time and created the first flush toilet!
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| Number | Title | Issue Date |
| 5268845 | Method for detecting low battery state without precise calibration A portable electronic system, which can accurately predict impending battery failure, without using expensive comparators, by using voltage and current measurements to determine the source impedance of a battery. Preferably two banks of batteries are used... | 12/07/1993 |
| 5099516 | Digital computer code word identification system A digital computer system has a central processor unit (CPU). A computer program, entered into the digital computer system for execution thereof, has a program code word embedded at an arbitrary location therein. An addressable programmable array of logic... | 03/24/1992 |
| 5028806 | Battery replacement system for battery-powered digital data handling devices A battery-powered lap-top computer has a main battery for ordinarily supplying power to the computer circuitry. A reserve battery is connected through an automatic switch to the circuitry. The circuitry is connected to a pair of contacts and the switch is... | 07/02/1991 |
| 5008976 | Digital apparatus having a display section adjusted by a hinge assembly with rolling resistance A hinge assembly has a plurality of rollers which are pressed against an elastic washer by a shaft. The rollers and elastic washer are contained within a cylindrical retainer which is held in a fixed position relative to a first bracket, while the shaft i... | 04/23/1991 |
| 4999767 | System having cup operation al error warning facility using visual indicator and real-time clock interrupt routine An electronic digital computer has a warning facility for indicating activity and operation, or lack of same, of the central processor in the system. It is done by providing a signal indicative of continuing operation of the central processor to activate ... | 03/12/1991 |
| 4982120 | Power supply decoupling mechanism for integrated circuits An integrated circuit is formed in a semiconductor chip and connected to at least a first source of voltage and at least a second source of voltage, negative with respect to the first source of voltage. A number of integrated circuit components are activa... | 01/01/1991 |
| 4924355 | Personal computer having expansion card adapter bracket A personal computer has a chassis having a plurality of expansion slots in which are mounted optional Input/Output (I/O) expansion cards. At least one first expansion card has a first bracket adapted for connection to a mounting fixture. At least one seco... | 05/08/1990 |
