246 EXPLORATION GEOPHYSICS 



2,415,808 Issued Feb. 18, 1947. O. E. Buckley. "Detection of Large Magnetic Bodies." 

 2,418,553 Issued April 8, 1947. E. M. Irwin. "Flux Measuring System." 

 2,420,580 Issued May 13, 1947. L. L. Antes. "Magnetometer." 



2,424,562 Issued July 29, 1947. C. F. Fragola. "Gyro Flux- Valve Compass System." 

 2,424,772 Issued July 29, 1947. F. Rieber. "System for Detecting Magnetic Masses." 

 2,425,180 Issued Aug. 5, 1947. C. H. Fay. "Magnetic Field Measurements." 

 2,426,470 Issued Aug. 26, 1947. A. T. Sinks. "Remote-Indicating Magnetic-Compass 



System." 

 2,426,622 Issued Sept. 2, 1947. A. G. Laird and T. Slonczewski. "Magnetic Field 



Detector." 

 2,427,014 Issued Sept. 9, 1947. W. J. Means. "Orienting Device." 

 2,427,654 Issued Sept. 23, 1947. L. F. Beach. "Remote-Reading Flux- Valve Compass 



System." 

 2,427,666 Issued Sept. 23, 1947. E. P. Felch, Jr. and T. Slonczewski. "Magnetic Field 



Strength Indicator." 

 2,428,014 Issued Sept. 30, 1947. R. S. Curry and C. F. Fragola. "Concentric-Core 



Flux Valve." 

 2,428,346 Issued Sept. 30, 1947. W. G. White. "Magnetic Compass." 

 2,431,319 Issued Nov. 25, 1947. W. B. Ellwood. "Magnetic Firing Device." 

 2,432,514 Issued Dec. 16, 1947. M. C. Depp and C. F. Fragola. "Adjustable Flux 



Valve." 

 2,434,324 Issued Jan. 13, 1948. H. Lehde. "Earth Inductor Compass." 

 2,435,276 Issued Feb. 3, 1948. E. L. Holmes. "Magnetic Field Indicating Means." 

 2,436,039 Issued Feb. 17, 1948. C. H. Fay. "Magnetic-Field Gradient Measurement." 

 2,436,394 Issued Feb. 24, 1948. W. P. Maltby and R. H. Park. "Magnetic Detector." 

 2,437,132 Issued Mar. 2, 1948. A. T. Sinks. "Remote Indicating Compass." 

 2,437,374 Issued Mar. 9, 1948. R. E. Burroughs. "Magnetic Field Measuring Device." 

 2,437,506 Issued Mar. 9, 1948. L. P. Grossman. "Repeater Compass." 

 2,437,692 Issued Mar. 16, 1948. E. W. Hart. "Magnetic Compass." 

 2,438,372 Issued Mar. 23, 1948. L. I. Mendelsohn. "Precision Magnetometer." 

 2,438,964 Issued Apr. 6, 1948. D. H. Cunningham and H. Belar. "Magnetic Field 



Detector." 

 2,440,503 Issued Apr. 27, 1948. C. H. Fay. "Magnetic Gradiometer." 

 2,441,269 Issued May 11, 1948. H. E. Hartig. "Electron Discharge Compass 



System." 

 2,442,732 Issued June 1, 1948. J. H. Rubenstein. "Magnetometer." 

 2,443,595 Issued June 22, 1948. F. D. Braddon. "Deviation Correcting Means for 



Magnetic Devices." 

 2,444,290 Issued June 29, 1948. C. E. Granqvist. "Earth Induction Compass." 

 2,444,669 Issued July 6, 1948. J. C. Pollard and C. F. Sellers. "Support for Sub- 

 merged Area Surveying." 

 2,446,568 Issued Aug. 10, 1948. L. Wolfe. "Magnetic Compass." 

 2,447,496 Issued Aug. 24, 1948. M. C. Depp, R. S. Curry, Jr., and C. F. Fragola. 



"Flux Valve System and Method of Operation." 

 2,447,849 Issued Aug. 24, 1948. C. H. Fay. "Magnetometer." 

 2,447,880 Issued Aug. 24, 1948. J. D. Seaver. "Magnetometer." 

 2,448,613 Issued Sept. 7, 1948. F. G. Merrill. "Magnetic Detector." 

 2,451,819 Issued Oct. 19, 1948. A. Frosch. "Induction Magnetometer." 



