| 1961 SULLIVAN Journal Stop Mechanism Patent |
| 1961 TWIGG Handgun Safety Mechanism Patent Print |
| 1961 HUCK Pin Handling Mechanism Patent Print |
| 1961 TOOMEY JR Release Mechanism Patent Print |
| 1961 WILLIAM RIMMER Delay Mechanism Patent Print |
| 1961 VINING Trip And Shear Mechanism Patent |
| 1961 GRANDY ANDREW Firing Mechanism Patent Print |
| 1961 NAT LEAD CO Journal Stop Mechanism Patent |
| 1961 NAT CASTINGS CO Cushioning Mechanism Patent |
| 1961 ROBERT Doll Crawling Mechanism Patent Print |
| 1961 REED Dual Rate Sear Mechanism Patent Print |
| 1961 HOLAHAN Fishing Reel Drag Mechanism Patent |
| 1961 KEMPTON Ammunition Feed Mechanism Patent |
| 1961 REUWER MILTON Trigger Mechanism Patent |
| 1961 SZCZEPANIK Sliding Door Mechanism Patent |
| 1961 HECKEL JR Rudder Mechanism Patent Print Art |
| 1961 JOSEPH TANNENBAUM Recoil Mechanism Patent |
| 1961 NORMAN Inertia Time Delay Mechanism Patent |
| 1961 ACF IND INC Sliding Door Mechanism Patent |
| 1961 DONALD Cushioning Mechanism Patent Print |
| 1961 ALBRECHT Pin Distributing Mechanism Patent |
| 1961 CLARKE Lift Mechanism Or The Like Patent |
| 1961 TED Ejection Bolt Mechanism Patent Print |
| 1961 HUCK Bowling Pin Changing Mechanism Patent |