| 1929 UNION SWITCH SIGNAL CO Railway Switch Controlling |
| 1929 BAKER Motor Controlling Apparatus Patent |
| 1929 WARNER Railway Traffic Controlling Art |
| 1929 THOMPSON Railway Traffic Controlling Art |
| 1929 LOOMIS Controlling Railway Switches Art |
| 1929 SKENE Railway Traffic Controlling Art |
| 1929 STOKER Railway Traffic Controlling Art |
| 1929 UNION Controlling Highway Crossing Signals |
| 1929 CARD Needle Bar Controlling Sewing Machines |
| 1929 BALDWIN CO Expression Controlling Means Art |
| 1929 HANDLEY Method Means Controlling Aeroplanes |
| 1929 SPRAY Railway Switch Controlling Art Print |
| 1929 MCCANN Railway Traffic Controlling Art |
| 1929 UNION Railway Traffic Controlling Art |
| 1929 MALLUK Fuel Controlling Means Automobiles |
| 1929 RUBEL Thread Controlling Mechanism Sewing Machines |
| 1929 FAILOR Railway Traffic Controlling Art |
| 1929 REED Railway Traffic Controlling Art Print |
| 1929 UNION SWITCH SIGNAL CO Motor Controlling |
| 1929 BROOKS Controlling Highway Crossing Signals |
| 1929 SPEER Controlling Railway Switches Art |
| 1929 COPPOCK Discharge Controlling Dump Bodies |
| 1929 UNION Controlling Railway Switches Art |
| 1929 GEIGER Railway Traffic Controlling Art |
| 1929 SINGER CO Needle Bar Controlling Sewing Machines |
| 1929 UNION Thread Controlling Mechanism Sewing Machines |
| 1929 GILSON Railway Traffic Controlling Art |
| 1929 RICE Aircraft Propelling Controlling Means |
| 1929 WILLIAMS Expression Controlling Means Art |
| 1929 GRONDAHL Railway Traffic Controlling Art |
| 1929 MACLAFFERTY Method Controlling Floating Logs Like |
| 1929 SORENSEN Railway Traffic Controlling Art |