Glam girl Heddy Lamar may have used her good looks to good effect on the silver screen, but she put her smarts to better use as an inventor. During World War II, she co-patented a frequency-switching system for torpedo guidance that was considered years ahead of its time.
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| Number | Title | Issue Date |
| 4639882 | Monitoring system A system for monitoring data signals representing a number of parameters of a plant or apparatus, periodically superimposes test signals on to some of the data signals so as to produce combined signals representing unacceptable states of the parameters. T... | 01/27/1987 |
| 4628443 | Test initiating apparatus for appliances having self-diagnostic testing capability A test initiating device connectible to the power cord of an electronically controlled appliance for initiating appliance operation in either a normal operating mode or a self-diagnostic test mode. When so connected the test device is selectively switchab... | 12/09/1986 |
| 4627056 | Check system for a control board A check system for a control board having a microcomputer includes a checker which is actuated by a check program provided with the microcomputer. At each time line shift signals are generated, all input signal levels of the respective input connectors of... | 12/02/1986 |
| 4608647 | Method and apparatus for determining the noise power ratio (NPR) of a unit under test The present invention describes a method and apparatus for determining the noise power ratio (NPR) of a unit under test (UUT). According to the method, a frequency domain representation of a desired test spectrum is generated by prompting an operator to i... | 08/26/1986 |
| 4592003 | Measuring circuit device A measuring circuit device comprising a measuring circuit, a display associated with the measuring circuit for displaying data generated by the measuring circuit, a display test circuit for testing the display, a performance test circuit associated with t... | 05/27/1986 |
| 4538268 | Test-signal generating device for testing electronic equipment A generating device comprising means for storing test signals in the form of digital samples coupled to a digital-to-analog converter for converting the samples to analog signals at the output of the device. A read/write memory is interposed between the d... | 08/27/1985 |
| 4502127 | Test system memory architecture for passing parameters and testing dynamic components A test system memory architecture for passing parameters and testing dynamic components includes a main memory 15, a mask memory 20, and a definition memory 25, operating under control of a main sequence control memory 18. A corresponding subroutine memor... | 02/26/1985 |
| 4494845 | System for controlling the activity of developing solutions and apparatus for processing photosensitive materials A developer's activity control system and a photographic processing apparatus controlling same that divides the activity of the developing solution into a plurality of stages on the basis of the results of the processing of control strips and takes the ne... | 01/22/1985 |
| 4488299 | Computerized versatile and modular test system for electrical circuits An address and data bus connects a multiplicity of ports into which test modules can be inserted with a microcomputer controlled by a keyboard for performing tests on circuit boards or other electronic units through test plugs that are interconnected with... | 12/11/1984 |
| 4456380 | Test system for identifying bacteria A test system for identifying bacteria comprising a plate accommodating portion for placing therein a transparent culture plate having a plurality of cells, a light source assembly for applying a light to a specimen in each of the cells of the culture pla... | 06/26/1984 |
| 4450405 | Alloy testing apparatus using eddy current conductivity probe An analog signal produced in response to eddy current probing of a test part is digitized by an analog-to-digital processor and then entered into a microprocessor-based computer. The digitized conductivity test signal is then acted on by a series of proce... | 05/22/1984 |
| 4448033 | Thermostat self-test apparatus and method Apparatus and method for effecting self-test of a thermostat is disclosed. The permissible thermostat outputs are arranged into an array capable of being converted into a binary number. Testing is done to determine whether or not the binary number ascerta... | 05/15/1984 |
| 4417337 | Adaptive multitone transmission parameter test arrangement Accurate and reliable measurements of transmission parameters, e.g., envelope delay distortion or frequency response, of a network or facility (105) are obtained in a test system (FIG. 1) employing digital data acquisition units (121) by utilizing a uniqu... | 11/22/1983 |
| 4349869 | Dynamic matrix control method A method for controlling and optimizing the operation of a series of interdependent processes in a plant environment. Manipulation of one or more constrained process input variables is used to achieve feedforward/feedback control of one or more process ou... | 09/14/1982 |
| 4340935 | Method of testing the operativeness of a control system A method of testing the operativeness of a vehicular anti-wheel-lock system of the type whose control device includes a self-monitoring circuit which, when the control device is switched on, initiates a test program and upon detection of system malfunctio... | 07/20/1982 |
| 4337638 | Liquid gaging system self test circuitry The present invention is part of a liquid gaging system and comprises an apparatus for self testing the system. Included is an excitation signal generator apparatus for providing an excitation signal and a precision reference component for providing a pre... | 07/06/1982 |
| 4337515 | Automotive engine analyzer for indicating a no-connection condition of engine test leads A voltage divider network comprising three series connected resistors serve to reference a test signal lead connectable to an internal combustion engine, with respect to ground for providing a voltage test signal on an output conductor representative of t... | 06/29/1982 |
| 4329029 | Camera controller In a camera, a camera controller which maintains the camera in a state of maximum readiness while facilitating operator adjustment of the camera setting by means of a single control so as to allow a choice between depth of focus and the ability of the cam... | 05/11/1982 |
| 4312015 | Automatic MRT system A testing system for measuring and evaluating the performance of electro-optical systems. The system under test is operated with the optics and electronics functioning in its normal manner. To simulate the type of signal produced by a test object under no... | 01/19/1982 |
| 4275451 | Method of and apparatus for testing of mass-produced articles In a method for testing mass-produced articles a test cycle is run during transport of said articles from a first predetermined position to a second predetermined position. During said transport the articles are provided with a connection to an electric m... | 06/23/1981 |
| 4264859 | Method and apparatus for measurement of attenuation and distortion by a test object A method for measuring the transmission characteristics of an object under test consists of applying a test pulse to the input of an object under test which has a filter characteristic, and evaluating the test pulse when it is produced at the output. The ... | 04/28/1981 |
| 4260262 | Grain quality analyzer An improved grain quality analyzer, for analyzing the percentage concentration of various constituents, e.g. protein and water, in a grain sample, photo-optically measures the change in the optical density of the sample, Ɗ OD, in a range of characteristi... | 04/07/1981 |
| 4224466 | Combined data input and test circuit Input channels are provided for receiving data pulses from sensors or other parts of an electronic data system. Filters, for examle r-f decoupling filters, are provided for each channel prior to passing the pulses to a utilization device, such as a counte... | 09/23/1980 |
| 4218745 | Microcomputer assisted electrical harness fabrication and testing system A microcomputer based system which provides a fast, error-free method of electrical harness fabrication and testing. Each connector into which the harness will be wired is mounted on a receptacle containing a multiplex transponder, a plurality of which ar... | 08/19/1980 |
| 4119070 | Closed-loop mixture control system for an internal combustion engine with circuitry for testing the function of closed loop A closed-loop mixture control system for an internal combustion engine comprises an electronic control section and an electromechanical section comprised of the engine, an air-fuel metering system and an exhaust composition sensor. The system further comp... | 10/10/1978 |
| 4109511 | Method and apparatus for statistically testing frangible containers Method and apparatus for statistically testing frangible containers produced by plural mold sources by selectively diverting containers to a test station at regular intervals of time. A diverted container is automatically tracked to the test station where... | 08/29/1978 |
| 4088227 | Multiplexed sorting apparatus with test circuitry A sorting apparatus wherein a plurality of first and second electrical color signals from a predetermined number of viewer elements are sampled by a time multiplexer, classified on the basis of the ratio of the color signals sampled from each viewer, and ... | 05/09/1978 |
| 4065647 | Automatic acoustical testing system An automatic acoustical testing system is described wherein a digital computer controller utilizing hard-wired program memory is used to control testing of acoustical devices, such tests being carried out by driving a device to be tested with audio sound ... | 12/27/1977 |
| 4058766 | Multiple-frequency permittivity tester As in prior testers, a capacitive cell in which material is placed to be tested is connected in a voltage divider circuit. However, signal generating means connected to the voltage divider applies voltages at different predetermined frequencies selected f... | 11/15/1977 |
| 4040747 | Optical analyzer for agricultural products An automatic test instrument for gaging the percentage of various constituents in organic substances by comparing the reflective optical density of the subject at various wavelengths. Narrow band optical filters are connected together in the form of a rot... | 08/09/1977 |