| 1935 EDISON SPLITDORF CORP Direction Signal System |
| 1935 UNION SWITCH SIGNAL CO Railway Switch Operating |
| 1935 UNION SWITCH SIGNAL CO Railway Track Skate |
| 1935 GLOCK Vehicle Actuated Signal Patent Print |
| 1935 RICHTERKESSING Railway Crossing Signal Art |
| 1935 UNION SWITCH SIGNAL CO Electrical Transmitter |
| 1935 WILLIAM BILLIG Warning Signal Patent Print |
| 1935 SUBMARINE SIGNAL CO Submarine Signaling |
| 1935 WHITEHORN Automatic Block Signal System Railroads |
| 1935 JUBILEE MFG CO Warning Signal Patent Print |
| 1935 ARISTIDE Automatic Train Signal Level Crossings |
| 1935 GEN RAILWAY SIGNAL CO Light Signal Railroads |
| 1935 BROGGER Direction Signal System Patent |
| 1935 VARNER WILSON JR Railroad Washout Safety Signal |
| 1935 BAMBERGER Safety Signal For Firearms Patent |
| 1935 UNION SWITCH SIGNAL CO Railway Signaling |
| 1935 SCHWARZE ELECTRIC Audible Signal Art Print |
| 1935 GEN MOTORS CORP Signal Device Patent Print |
| 1935 GEN RAILWAY SIGNAL CO Railway Track Circuit |
| 1935 UNION SWITCH SIGNAL CO Railway Switch Controlling |
| 1935 GEN ELECTRIC Railway Signal System Patent |
| 1935 VASOLD LEO Audible Signal Patent Print Art |
| 1935 UNION SWITCH SIGNAL CO Remote Control System |
| 1935 GEN Automatic Block Signal System Railroads |
| 1935 UNION SWITCH SIGNAL CO Railway Signaling System |
| 1935 SUITS Railway Signal System Patent Print |
| 1935 MERKEL Light Signal For Railroads Patent |
| 1935 WATERBURY Electrically Operated Audible Signal |
| 1935 UNION SWITCH SIGNAL CO Ground Detecting |
| 1935 SUBMARINE SIGNAL CO Vacuum Tube Circuit Art |
| 1935 KARMAC INC Signal Chime Patent Print Art |
| 1935 GEN RAILWAY SIGNAL CO Car Retarder Railroads |
| 1935 HOLMES Message Carrying Signal Airplanes |
| 1935 CARAH GEORGE Gas Cap And Signal Patent |
| 1935 POOLE Time Instrument Signal Mechanism Art |
| 1935 SEWELL ARTHUR Landing Signal Patent Print |
| 1935 RESPESS AERONAUTICAL ENGINEERI Aerial Signal |
| 1935 STRYNATKA THOMAS Crossing Signal Patent |
| 1935 CRITCHFIELD ROBERT Sound Signal Patent |
| 1935 KARNELL ROBERT Signal Chime Patent Print |
| 1935 RESPESS Aerial Signal Device Patent Print |
| 1935 BRADY Street Traffic Timing Signal Patent 49180 |
| 1935 PUTNAM Electrically Operated Audible Signal |
| 1935 GEN RAILWAY SIGNAL CO Power Supply System |
| 1935 GEN MOTORS CORP Sound Signal Patent Print |
| 1935 WILLIAM Automatic Traffic Signal Art Print |
| 1935 GILLET ALEXIS Warning Signal Patent Print |
| 1935 UNION SWITCH SIGNAL CO Car Retarder Structure |
| 1935 CRITCHFIELD ROBERT Signal Device Patent |
| 1935 RICHTERKESSING Control Railway Signal Systems |
| 1935 E INGRAHAM Time Instrument Signal Mechanism |
| 1935 UNION SWITCH SIGNAL CO Railway Track Circuit |
| 1935 UNION SWITCH SIGNAL CO Remote Control Art |
| 1935 UNION SWITCH SIGNAL CO Track Shunting Art |
| 1935 STANTON Railroad Washout Safety Signal Art |
| 1935 NACHOD Railway Crossing Signal Art Print |
| 1935 UNION SWITCH SIGNAL CO Railway Braking Art |
| 1935 BERGERON Signal Musical Instrument Art |
| 1935 GEN RAILWAY SIGNAL CO Magnetic Car Retarder |
| 1935 SPARKS WITHINGTON CO Warning Signal Patent |
| 1935 NACHOD Control Railway Signal Systems Art |
| 1935 JEROME Warning Signal Control Road Vehicles |
| 1935 BOHANNON Railway Crossing Signal Patent |
| 1935 GEN RAILWAY SIGNAL CO Signaling System Railroads |
| 1935 UNION SWITCH SIGNAL CO Remote Controlling |