| 1941 RECONSTRUCTION FINANCE CORP Control Valve |
| 1941 GRANT Air Valve Unit For Pipe Organs Patent |
| 1941 LINDSAY ENGINEERING CORP Valve Structure |
| 1941 BENDIX AVIAT CORP Flow Control Valve Patent |
| 1941 WEIDNER Automatic Low Pressure Valve Patent |
| 1941 ROCKWELL Hydraulic Power Control Valve Art |
| 1941 TRAUTMAN Flow Control Valve Patent Print |
| 1941 LINDSAY ROBERT Valve Structure Patent Print |
| 1941 HUNTER Multiple Valve Invertible Tanks Art |
| 1941 SHERRILL Auxiliary Valve Gear Locomotives |
| 1941 DICKSON Control Valve Fluid Brakes Art |
| 1941 FRANK Valve Art |
| 1941 BENDIX AVIAT CORP Valve Patent Print Art |
| 1941 BENJAMIN LIVERS By Pass Valve Patent Print |
| 1941 ERLE Propeller Pitch Control Valve Patent |
| 1941 LADDON ISAAC Fuel Dump Valve Patent Print |
| 1941 NEUBERT JR Follow Up Valve Patent Print Art |
| 1941 GABRIEL Moving Valve Single Reed Patent |
| 1941 BURLIGAME Tire Valve Tool UPSON Patent 44969 |
| 1941 DE GANAHL Control Valve Patent Print Art |
| 1941 CONS AIRCRAFT CORP Fuel Dump Valve Patent |
| 1941 CURTISS WRIGHT CORP Hydraulic Pump Valve |
| 1941 JOHNSON Thermostatic Expansion Valve Patent 43211 |
| 1941 OLDS Piston Valve Musical Wind Instruments |
| 1941 ROSSMANN Hydraulic Pump And Valve Patent |
| 1941 NEUBERT Follow Up Valve Patent Print Art |
| 1941 FAIRBANKS LOCOMOTIVE STEAM VALVE CATALOG |
| 1941 FARMALL IHC H VALVE COVER & ROCKER ASSY-VINTAGE |