| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Canada | 4 | |
| #2 | United States | 3 | |
| #3 | Germany | 2 | |
| #4 | France | 2 |
| # | Industry | |
|---|---|---|
| #1 | Civil engineering |
| # | Technology | |
|---|---|---|
| #1 | Machines for making railways |
| # | Name | Total Patents |
|---|---|---|
| #1 | Thomson Mcleod | 4 |
| #2 | Mcleod Thomson | 3 |
| Publication | Filing date | Title |
|---|---|---|
| US2257027A | Modified t-rail | |
| US1954687A | Railway rail | |
| DE577150C | Rail connection for high-rise rails | |
| DE575490C | Flap joint connection for undercut railroad tracks with no head | |
| US1791390A | Rail-splicing structure | |
| CA343221A | Railway rail | |
| CA404740A | Modified t-rail | |
| CA311132A | Rail splicing structure | |
| CA315510A | Railway rail |