Advanced science.  Applied technology.



Patent Number Date Of Issue Title of Invention Inventors
4,244,053 01/05/1981 Privacy Communication Method & System

Paul E. Martin; Marvin R. Clinch; Calvin R. Graf; Robert B. Fenwick

4,221,597 09/08/1980 Additive for Improved Performance of Silicate Cement

William A. Mallow

4,216,476 08/04/1980 Digital Electronic Commutator for Radio Direction Finding System

Richard Lorenz; Paul E. Martin

4,210,103 06/30/1980 Fuel System for and a Method of Operating a Spark-Ignited Internal Combustion Engine

Edward Dimitroff; John A. Vitkovits

4,207,572 06/09/1980 Skywave DF Antenna System

Jackie E. Hipp; Douglas N. Travers; Terence C. Green; William M. Sherrill; Richard L. Johnson

4,197,478 04/07/1980 Electronically Tunable Resonant Accelerometer

Howard S. Silvus

4,194,574 03/24/1980 Draft Power Sensor & Method for Improving Performance in Earth-Moving Equipment

Harvey S. Benson; Charles D. Wood

4,181,943 12/31/1979 Speed Control Device for Trains

Lloyd I. Mercer, Sr.; Steven B. Hugg

4,173,455 11/05/1979 Fire-Safe Hydrocarbon Fuels

George E. Fodor; William D. Weatherford; Bernard R. Wright

4,168,860 09/24/1979 Multi-Purpose Convertible Seat Construction

Luis R. Garza; William J. Astleford