| 1961 HEITSHU Screw Conveyor Assembly Patent |
| 1961 PARKER Conveyor Power Chain Patent Print |
| 1961 MAYER KING Conveyor Systems Patent Print |
| 1961 BESSETTE Conveyor Chain Lifting Device |
| 1961 JEAN Endless Conveyor Cable Drive Stations |
| 1961 COLUMBUS Conveyor Power Chain Load Pick Up Unit |
| 1961 SJIRK WAGTER Conveyor System Patent Print |
| 1961 OTTO MELMER Conveyor Interchange Patent |
| 1961 PALMER BEE COMPANY Conveyor Interchange Art |
| 1961 JAMPOL COMPANY INC Power Track Conveyor Art |
| 1961 DANIELS Power Track Conveyor Patent Print |
| 1961 GODFREY CONVEYOR INC Conveyor Unit Art |
| 1961 STAATSBEDRIJF DER POSLERIJEN T Conveyor System |
| 1961 BUCKEYE INCUBATOR COMPANY Feed Conveyor |
| 1961 BAILEY RALPH Feed Conveyor Patent Print Art |
| 1961 SPERRY RAND CORP Screw Conveyor Assembly |
| 1961 MECHANICAL Power Free Conveyor System Art |
| 1961 PAUL Power And Free Conveyor System Patent |
| 1961 SHERMAN Conveyor System Pit Floor Bowling Alleys |
| 1961 COLUMBUS MCKINNON CHAIN CORP Conveyor Power Chain |
| 1961 DEPUTY SHERRILL Conveyor Unit Patent Print |
| 1961 PARKER Conveyor Power Chain Load Pick Up Unit |