| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Canada | 9 | |
| #2 | United States | 4 |
| # | Industry | |
|---|---|---|
| #1 | Environmental technology | |
| #2 | Packaging and shipping | |
| #3 | Mechanical elements | |
| #4 | Civil engineering |
| # | Technology | |
|---|---|---|
| #1 | Transport or storage devices | |
| #2 | Doors and windows | |
| #3 | Pipes | |
| #4 | Combustion residues removal |
| # | Name | Total Patents |
|---|---|---|
| #1 | Orrock John W | 13 |
| Publication | Filing date | Title |
|---|---|---|
| US1511769A | Underground conduit | |
| US1389211A | Mill-type door | |
| CA193068A | Cover for track scales | |
| CA170764A | Right of way sign for railways | |
| CA163956A | Smoke jack | |
| US1150878A | Smoke-jack for locomotive-engine houses or the like. | |
| CA103275A | Conveyer crane | |
| US841712A | Traveling conveyer-crane. | |
| CA212543A | Flange way guard | |
| CA211079A | Ventilator | |
| CA213096A | Metal door | |
| CA213546A | Weather cover for track scales | |
| CA239839A | Weather proof rail stand for track scales |