P A T E N T S

J.A. SIMPSON

 
    DATE              TITLE                                     SERIAL    PATENT
  4-26-45   Electrical Apparatus and Method, Volney C. Wilson 590,425  2,633,540

  4-26-45   Radiation Device and Method of Construction,      590,424  2,602,904

  5-22-45   Electrical Apparatus,                             595,192  2,595,550

  10-31-46  Neutron Proportional Counter,                     706-946  2,793,309

  12-31-46  Air Proportional Counter,                         719,525  2,532,956

  12-31-46  Proportional Counter,                             719,526  2,505,919

  2-21-47   Radioactivity Measuring Device,                   730,174  2,509,700

  4-28-47   Radiation Counter,                                744,499  2,606,296

 12-15-53   Reading Rate Device,                                       2,662,307
    
 12-15-53   Reading Rate Device (McMaster Assigned to Simpson)         2,662,306

  1-5-60    Reading Training Device (Reynolds Assigned to Simpson)     2,919,499    

  1-5-60    Reading Training Device (Simpson, Sinila, Soderquist)      2,919,500    

            Variable Constant Speed Drive Mechanism 
            (Simpson and Soderquist)

  8-9-66    Skills Timer,                                             3,264,759

  5-2-67    (Magnetic) Shunt Control                                   3,316,661
            (Simpson and Soderquist)