964 EXPLORATION GEOPHYSICS 



2,324,085 Issued July 13, 1943. Leo Horvitz and Esme E. Rosaire. "Geochemical 



Well Logging." 

 2,324,107 Issued July 13, 1943. Sylvain J. G. Pirson. "Method for the Geochemical 



Prospection of Hydrocarbon Deposits." 

 2,325,057 Issued July 27, 1943. Herbert Hoover, Jr. and Herbert E. Metcalf. "Means 



for Obtaining Soil Samples." 

 2,327,539 Issued Aug. 24, 1943. Edward D. McAlister. "Apparatus for Gas Analysis." 

 2,328,555 Issued Sept. 7, 1943. Herbert Hoover, Jr. "Well Logging Method." 

 2,329,824 Issued Sept. 21, 1943. John G. Campbell. "Method of Determining Suitable 



Areas for Oil Exploration." 

 2,330,021 Issued Sept. 21, 1943. M. A. Arthur. "Geochemical Prospecting." 

 2,330,026 Issued Sept. 21, 1943. Ludwig W. Blau. "Geochemical Prospecting." 



2.330.716 Issued Sept. 28, 1943. Leo Horvitz. "Geochemical Prospecting." 



2.330.717 Issued Sept. 28, 1943. Leo Horvitz. "Geochemical Prospecting." 

 2,330,758 Issued Sept. 28, 1943. Millard S. Taggart, Jr. "Geochemical Prospecting." 

 2,330,829 Issued Oct. 5, 1943. H. T. F. Lundberg and N. B. Keevil. "Method of 



Geophysical Exploration." 

 2,334,269 Issued Nov. 16, 1943. Stephen A. Kiss. "Geochemical Prospecting Method." 

 2,336,176 Issued Dec. 7, 1943. Leo Horvitz. "Geochemical Prospecting." 



2.336.612 Issued Dec. 14, 1943. Leo Horvitz. "Geochemical Prospecting." 



2.336.613 Issued Dec. 14, 1943. Leo Horvitz. "Geochemical Well Logging." 

 2,337,443 Issued Dec. 21, 1943, Ludwig W. Blau. "Process for Locating Valuable 



Subterranean Deposits." 

 2,337,465 Issued Dec. 21, 1943. J. J. Heigl. "Well Logging." 

 2,338,643 Issued Jan. 4, 1944. Leo Horvitz. "Geochemical Prospecting." 

 2,339,651 Issued Jan. 18, 1944. Donald_ S. Rearden, Earl G. Brewster and Robert 



Thomas Sanderson. "Geochemical Prospecting." 

 2,341,169 Issued Feb. 8, 1944. R. W. Wilson, A. Long, Jr. and M. T. Randolph. 



"Method and Apparatus for Detecting Gas in Well Drilling Fluids." 

 2,342,273 Issued Feb. 22, 1944. J. T. Hayward. "Method of Detecting Oil in Well 



Drilling." 

 2,343,772 Issued March 7, 1944. Leo Horvitz. "Geochemical Prospecting." 

 2,345,219 Issued Mar. 28, 1944. Robert Thomas Sanderson. "Geochemical Prospecting." 

 2,346,203 Issued April 11, 1944. W. M. Zaikowsky. "Well Logging Method." 

 2,346,735 Issued April 18, 1944. Patrick F. Dougherty. "Method of Detecting 



Petroleum Deposits." 

 2,348,103 Issued May 2, 1944. Arnold O. Beckman. "Method of Soil Analysis for 



Location of Oil Deposits." 

 2,349,250 Issued May 23, 1944. Richard L. Doan. "Gas Detection." 

 2.349,472 Issued May 23, 1944. Millard S. Taggart, Jr. "Oil Prospecting Method." 

 2,356,454 Issued Aug. 22, 1944. William B. Ferguson. "Method and Apparatus for 



Fluorography." 

 2,361,261 Issued Oct. 24,_ 1944. John G. Campbell. "Method of Detecting Penetration 



of an Oil-Bearing Horizon." 

 2,362,805 Issued Nov. 14, 1944. Richard L. Doan. "Method and Apparatus for 



Detecting Hydrocarbons." 

 2,364,898 Issued Dec. 12, 1944. Gerald L. Hassler. "Analysis Method for Geochemical 



Exploration." 

 2,364,940 Issued Dec. 12, 1944. Clarence C. Bies. "Gas Analysis and Combustion 



Chamber Therefor." 

 2,366,351 Issued Jan. 2, 1945. James L. Patton. "Measurement of the Rate of Soil 



Gas Evolution." 

 2,367,592 Issued Jan. 16, 1945. Eugene McDermott. "Method of Prospecting for 



Buried Deposits." 

 2,367,664 Issued Jan. 23, 1945. John G. Campbell and Ralph H. Fash. "Method of 



Petroleum Exploration." 

 2,369,811 Issued Feb. 20, 1945. R. W. Stuart. "Drill Mud Logging Recording Sys- 

 tem or the Like." 

 2,370,703 Issued Mar. 6, 1945. Wladimir M. Zaikowsky. "System for Gas Analysis." 

 2,370,793 Issued March 6, 1945. Leo Horvitz. "Geochemical Prospecting." 

 2,371,637 Issued March 20, 1945. Eugene McDermott. "Method of Prospecting for 



Buried Deposits." 

 2,374,135 Issued April 17, 1945. Edwin E. Roper. "Geochemical Surveying." 



