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| Number | Title | Issue Date |
| 4229799 | Method and apparatus for measuring area traversed by vehicular implement A system for indicating area traversed by a vehicular implement has a ground speed sensor for generating ground speed pulses at a frequency which is a function of the implement ground speed; a pulse generator for deriving fixed width pulses from said grou... | 10/21/1980 |
| 4156231 | Automated pattern inspection system An automated pattern inspection system comprising first means for measuring an area value of an object digitized pattern, second means for computing a first square value of a boundary length from the area value, third means for detecting a boundary of the... | 05/22/1979 |
| 4144576 | Devices for measuring planar area within a closed curved path A device for measuring the movement of a movable means along a curved path comprises measuring means arranged to measure the movement of the movable means in terms of a series of increments corresponding to chords to the curved path of equal length, and c... | 03/13/1979 |
| 4083002 | Method and apparatus for measuring cross sectional area and weight per unit length of elongated, conductive material by magnetic field displacement A method and apparatus is disclosed whereby a solenoid coaxially surrounding an elongated electrically conducting material generates a radio frequency magnetic field of such a frequency that the material within excludes or displaces magnetic lines of forc... | 04/04/1978 |
| 4058712 | Acre counter A system for measuring the amount of area traversed by a vehicular implement comprising linear distance measuring means for generating an electrical signal having a characteristic which varies systematically in accordance with the distance traversed by th... | 11/15/1977 |
| 4051483 | System for measuring and recording three dimensional configuration of object An encoder for converting a distance to an electric signal is connected with a computer to put a distance signal into the computer. Th encoder is put on a moire pattern obtained by interference between a standard grating and a deformed image of the standa... | 09/27/1977 |
| 4019034 | Method for determining the interior shape of spherical tanks for the computation of the liquid volume of the tanks, and device for carrying out the method For determining the interior shape of spherical tanks for the computation of the liquid volume of the same, the following steps are performed: An arbitrary system of coordinates is established based on field measurements in the tank of a given number of s... | 04/19/1977 |
