1
Carol L Crom, Carl N Kelly, Thomas C Tillotson: Spectral correlation. E Systems, Robert V Wilder, September 25, 1979: US04169245 (53 worldwide citation)

Two signals are correlated in a properly programmed digital computer to render a result reflecting the difference in time of arrival of the two signals at separate receiving stations from a common emitter station. Signals received at each of the receiver stations are converted into digital data and ...


2
Carol L Crom, Elizabeth J Crom: Electrical odometer. Charles W McHugh, November 27, 1979: US04176397 (16 worldwide citation)

An electrical odometer for use in wheeled vehicles, including a transducer coupled in some manner to a wheel of the vehicle such that angular rotation of the wheel produces a series of discrete signals. The discrete signals are transformed into a first pulse train having a wave form shaped for drivi ...