| 1939 FINE WILLIAM Brake Gear Support Patent |
| 1939 GUNTHER Electromagnetic Rail Brake Patent |
| 1939 WESTINGHOUSE AIR BRAKE CO Slack Adjuster |
| 1939 BUFFALO BRAKE BEAM CO Car Truck Side Frame |
| 1939 AMERICAN STEEL FOUNDRIES Clasp Brake Arrangement |
| 1939 SALE WILLIAM Brake Beam NAYLOR PATENTS CORP |
| 1939 FARMER Hand Brake Release Control Patent |
| 1939 GOETTIE Roller Skate Brake Patent Print Art |
| 1939 BUDD WHEEL CO Vehicle Brake Patent Print |
| 1939 JOSEPH LEDWINKA Vehicle Brake Patent Print |
| 1939 AURIEN Carrier Iron And Brake Fulcrum Art |
| 1939 WESTINGHOUSE AIR BRAKE CO Brake Mechanism |
| 1939 WILLIAMS ALFRED Brake CLARK EQUIPMENT CO |
| 1939 BUFFALO BRAKE BEAM CO Brake Beam Strut Art |
| 1939 SATE Hand Brake Holding Mechanism Patent |
| 1939 FARMER CLYDE Brake Mechanism Patent Print |
| 1939 ILLINOIS Brake Hanger Retainer Locking Means |
| 1939 WILLIAMSON FREDERICK Brake Rigging Patent |
| 1939 AMERICAN Carrier Iron Brake Fulcrum Art |
| 1939 BUSCH Method Of Making Brake Beams Patent |
| 1939 PENNSYLVANIA RAILROAD CO Brake Rigging Art |
| 1939 MILLER FRANK Brake Mechanism Patent Print |
| 1939 WESTINGHOUSE AIR BRAKE CO Diaphragm Horn |
| 1939 HANSEN LARRY Brake Rigging Patent Print Art |
| 1939 BUFFALO BRAKE BEAM CO Combination Brake Beam Head |
| 1939 AMERICAN BRAKE CO Brake Rigging Patent |
| 1939 CLEAVE Railway Car Hand Brake Patent Print |
| 1939 WESTINGHOUSE AIR BRAKE CO Control Valve Art |
| 1939 ILLINOIS Brake Hanger Retainer Art Print |
| 1939 WESTINGHOUSE AIR BRAKE CO Electrical Connecter |
| 1939 RANSOM WILLARD Brake Mechanism Patent Print |
| 1939 BUSCH CHARLES Trussed Brake Beam Patent |
| 1939 KERR Brake Patent |
| 1939 ALOIS WIEDENBAUER Railway Car Hand Brake |
| 1939 FARMER Fluid Pressure Brake Patent Print |
| 1939 BUFFALO BRAKE BEAM CO Method Making Brake Beams |
| 1939 WHITNEY RALPH Brake Mechanism Patent Print |
| 1939 JOHNSON Brake Hanger Retainer Patent Print |
| 1939 FRED Brake Mechanism For Sleds Patent Print |
| 1939 UNION Hand Brake Mechanism Art Print Patent |
| 1939 GUSTAV Motor Driven Freewheel Brake Hub Bicycles |
| 1939 CLARK EQUIPMENT CO Brake Patent Print Art |
| 1939 WESTINGHOUSE AIR BRAKE CO Dust Guard Patent |
| 1939 ROBERT Liquid Brake Carrier Ships' Rudders |
| 1939 NAYTOR PATENTS CORP Hand Brake Holding Mechanism |
| 1939 WESTINGHOUSE AIR BRAKE CO Brake Device Art |
| 1939 CLEAVE Nonspin Wheel Brake Patent Print Art |
| 1939 AMERICAN STEEL FOUNDRIES Brake Arrangement |
| 1939 ALVIN J MUSSELMAN Two Speed Coaster Brake |
| 1939 NAYLOR PATENTS CORP Brake Beam Patent Print |
| 1939 HULL JOHN Magnetic Track Brake Patent Print |
| 1939 WESTINGHOUSE AIR BRAKE CO Rail Sanding Art |
| 1939 BENDIX PROD CORP Brake Patent Print Art |
| 1939 WESTINGHOUSE AIR BRAKE CO Pneumatic Signal |
| 1939 DAVID PATERSON Brake Beam Strut Patent |
| 1939 BUSCH CHARLES Brake Beam Patent Print Art |
| 1939 BUSCH CHARLES Brake Beam Strut Patent Print |
| 1939 FARMER CLYDE Brake Device Patent Print Art |
| 1939 WESTINGHOUSE BRAKE SIGNAL Automatic Slack Adjuster |
| 1939 CHICAGO RAILWAY EQUIPMENT CO Brake Gear Support |
| 1939 O'CONNOR Hand Brake Mechanism Patent Print |
| 1939 ERNST ZINDEL Rudder Brake Patent Print Art |
| 1939 GEN ELECTRIC Electromagnetic Rail Brake Art |
| 1939 BASELT WALTER Brake Arrangement Patent |
| 1939 BUFFALO BRAKE BEAM CO Brake Beam Patent |
| 1939 AURIEN Clasp Brake Arrangement Patent Print |
| 1939 BASELT Clasp Brake Arrangement Patent Print |
| 1939 LIGHT Brake Gear Safety Guard Patent Print |
| 1939 WESTINGHOUSE AIR BRAKE CO Magnetic Track Brake |
| 1939 NEVINGER RALPH Armature Brake Patent Print |
| 1939 WESTINGHOUSE AIR BRAKE CO Horn Patent Print |
| 1939 WILLIAM BURGETT Ski Brake Patent Print Art |
| 1939 JOHN Brake For Aircraft Wheels Patent Print |
| 1939 JOHNSON Brake Hanger Retainer Locking Means |
| 1939 FREDERIC SCHAEFER Brake Hanger Patent Print |
| 1939 LE Railway Brake Gear Device Patent Print |
| 1939 BERT Two Speed Coaster Brake Patent Print |
| 1939 HEFFNER Universal Sled Brake Patent Print |
| 1939 AURIEN RAY Brake Arrangement Patent Print |
| 1939 WESTINGHOUSE AIR BRAKE CO Piston Travel Amplifier |
| 1939 CHICAGO RAILWAY EQUIPMENT CO Railway Brake Gear |
| 1939 CHICAGO Brake Gear Safety Guard Art Print |
| 1939 MESSERSCHMITT BOELKOW BLOHM Rudder Brake |
| 1939 WESTINGHOUSE AIR BRAKE CO Sound Producer |
| 1939 WESTINGHOUSE AIR BRAKE CO Pneumatic Horn |
| 1939 BUSCH Combination Brake Beam And Head Art |
| 1939 ELLIS Brake Beam Safety Support Patent |
| 1939 BUFFALO BRAKE BEAM CO Trussed Brake Beam |
| 1939 WESTINGHOUSE AIR BRAKE CO Fluid Pressure Brake |
| 1939 BROWN WILLIAM Truck Brake Patent Print Art |
| 1939 WESTINGHOUSE Hand Brake Release Control Art |