| 1943 GEN Coded Track Circuit Signaling System |
| 1944 SCHEG Coded Track Circuit Signaling System |
| 1944 UNION Coded Track Circuit System Railway Signaling |
| 1942 PHINNEY Coded Track Circuit Signaling System |
| 1944 GEN Coded Track Circuit Signaling System |
| 1943 JUDGE Coded Track Circuit Signaling System |
| 1944 STAPLES Coded Signaling System Patent Print |
| 1944 REICHARD Coded Track Circuit Signaling System |
| 1945 SCHEG Coded Track Circuit Signaling System |
| 1945 REES Coded Track Circuit Signaling System |
| 1945 GEN Coded Centralized Traffic Control System |
| 1957 WESTINGHOUSE Coded Railway Signaling System |
| 1943 GEN Coded Coninuous Inductive Train Control System |
| 1946 GEN Coded Track Circuit Signaling System |
| 1951 GEN Coded Track Circuit Signaling System |
| 1951 PRESTON Coded Track Circuit Signaling System |
| 1944 UNION SWITCH SIGNAL CO Coded Signaling System |
| 1945 GEN Coded Track Circuit Signaling System |
| 1946 PRESTON Coded Track Circuit Signaling System |
| 1945 SIBLEY Coded Centralized Traffic Control System |
| 1942 GEN Coded Track Circuit Signaling System |
| 1957 IHRIG Coded Railway Signaling System Patent |
| 1894 Coded Time System Provincial Post Offices 1991 |
| WAHL 20 piece color-coded haircutting system. used once |
| CENTRALIZED TRAFFIC CONTROL TYPE K CLASS M CODED SYSTEM |