| 1930 JOSEPH Ship'S Life Saving Apparatus Patent |
| 1930 APPLEGATE Educational Game Apparatus Patent 6775 |
| 1930 DAWLEY Stage Vision Apparatus Patent Print |
| 1930 BONE Railway Braking Apparatus Patent Print |
| 1930 FISH Golf Practice Apparatus Or Game Patent |
| 1930 BELL Remote Control Apparatus Patent Print |
| 1930 THOMPSON Electrical Apparatus Patent Print |
| 1930 LEVY Cargo Discharging Apparatus Patent |
| 1930 BLICKMAN INC Exercising Apparatus Patent |
| 1930 THEODOR Brake Apparatus For Aircraft Patent |
| 1930 HOLMES SYDNEY Game Apparatus Patent Print |
| 1930 WETZELL CLARE Game Apparatus Patent Print |
| 1930 SCHMELZ Aircraft Launching Apparatus Patent |
| 1930 AMERICAN PATENTS CORP Game Apparatus Patent |
| 1930 OHLSON Ball Game Apparatus Patent Print Art |
| 1930 MANN CHAUNCEY Game Apparatus Patent Print |
| 1930 COSTELLO Exercising Apparatus Patent Print |
| 1930 JOHN MCCULLOUGH Game Apparatus Patent Print |
| 1930 JAMES WHITELEY Amusement Apparatus Patent |
| 1930 ADOLF Acoustic Signaling Apparatus Patent |
| 1930 ARTHUR BOLDUC Alarm Apparatus Patent Print |
| 1930 SIMMONS Baseball Game And Apparatus Patent |
| 1930 GRAY Track Lubricating Apparatus Patent |
| 1930 O'HAGAN Motor Control Apparatus Patent |
| 1930 MALCOLM Exercising Apparatus Patent Print |
| 1930 STOKER Train Counting Apparatus Patent |
| 1930 NORVIEL Ignition Apparatus Patent Print Art |
| 1930 ANDERSON WINTER Game Apparatus Patent Print |
| 1930 MORRIS CHARLES Coasting Apparatus Patent |
| 1930 BAINE Exercising Apparatus Patent Print Art |
| 1930 SCHLOTZ Illusion Apparatus Patent Print Art |
| 1930 MAX FERTIK Amusement Apparatus Patent Print |
| 1930 MARIUS LAURENT Flying Apparatus Patent |
| 1930 GEORGE UHLIG Diving Apparatus Patent Print |
| 1930 JOHN Track Sanding Apparatus Patent Print |
| 1930 BERTRAM Aeroplane Control Apparatus Patent |
| 1930 RALPH HOGE Game Apparatus Patent Print Art |
| 1930 FRANCIS Exercising Apparatus Patent Print |
| 1930 HALLIGAN Amusement Ride Apparatus Patent |
| 1930 JOHNSON ORVILLE Kite Apparatus Patent Print |
| 1930 BARRETT Game And Game Apparatus Patent |
| 1930 WILLIAM Golf Practice Apparatus Patent |
| 1930 KARL Apparatus For Forming Bags Patent |
| 1930 ETTA Corsetiere'S Fitting Apparatus Patent |
| 1930 BERNARR Golf Game Apparatus Patent Print |
| 1930 ERICKSON Leveling Apparatus Patent Print |
| 1930 CRAGO Train Annunciating Apparatus Patent |
| 1930 SCHWARTZ Game Signaling Apparatus Patent |
| 1930 JOSEPH Exercising Apparatus Patent Print |
| 1930 RITA Nursery Play Apparatus Patent Print |
| 1930 HARRY Exercising Apparatus Patent Print Art |
| 1930 REGINALD Golf Practice Apparatus Patent |
| 1930 GILSON Electrical Apparatus Patent Print |
| 1930 BENTON Educational Game Apparatus Patent |
| 1930 ALEXANDER Train Lighting Apparatus Patent |
| 1930 NIXON Vending Apparatus Patent 20207 |
| 1930 BARRETT Truck Body Tilting Apparatus Patent |
| 1930 UCHIYAMA EDWARD Game Apparatus Patent Print |
| 1930 ROMEO Aeroplane Steering Apparatus Patent |
| 1930 STOKER Remote Control Apparatus Patent |
| 1930 LECROY THOMAS Game Apparatus Patent Print |
| 1930 HEINA Portable Radio Apparatus Patent Print |
| 1930 SPRAY Railway Signaling Apparatus Patent |
| 1930 DAVIS Synchronizing Apparatus Patent Print |
| 1930 GILBERT Mixing Apparatus GILBERT Patent 20220 |
| 1930 HUGGINS FRANK Game Apparatus Patent Print |
| 1930 YOUNG FRANK Game Apparatus Patent Print Art |
| 1930 HECOX ALBERT Rowing Apparatus Patent Print |
| 1930 JOHNSON ELMER Game Apparatus Patent Print |
| 1930 HALLENBECK Hoisting Apparatus Patent Print |
| 1930 JOHN Submarine Salvaging Apparatus Patent |
| 1930 ELIZABETH B HOLMES Game Apparatus Patent |
| 1930 ELLIOTT LLOYD Game Apparatus Patent Print |
| 1930 RICE GEORGE Blasting Apparatus Patent Print |
| 1930 SALTER VERNON Game Apparatus Patent Print |
| 1930 ENGSTRAND Oil Pumping Apparatus Patent |
| 1930 FRANKLIN Loading Apparatus Patent Print Art |
| 1930 SOUBIER LEONARD Game Apparatus Patent Print |
| 1930 KARL KIEFER Exercising Apparatus Patent |
| 1930 REILLY Stage Vision Apparatus Patent Print |
| 1930 GODEFROY Sport Jumping Apparatus Patent |
| 1930 SPRAY Master Control Apparatus Patent Print |
| 1930 LUZERN Amusement Apparatus Patent Print Art |