| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Canada | 7 | |
| #2 | United States | 6 |
| # | Industry | |
|---|---|---|
| #1 | Machines | |
| #2 | Engines, pumps and turbines | |
| #3 | Transport | |
| #4 | Civil engineering |
| # | Technology | |
|---|---|---|
| #1 | Unspecified technologies | |
| #2 | Machines | |
| #3 | Locks | |
| #4 | Vehicle tyre repairing | |
| #5 | Rotary-pistons | |
| #6 | Producing goods from plastic |
| # | Name | Total Patents |
|---|---|---|
| #1 | Coffield Peter T | 13 |
| #2 | Coffield James L | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US1372938A | Vehicle-tire repairing | |
| CA177093A | Pneumatic tire protector | |
| US1181065A | Pneumatic-tire protector. | |
| CA158940A | Fountain | |
| CA126737A | Hydraulic motor | |
| US962623A | Hydraulic motor. | |
| CA113435A | Washing machine | |
| US902054A | Rotary pressure-motor. | |
| CA112599A | Rotary motor | |
| CA107077A | Water motor | |
| US853440A | Means for imparting rotary reciprocating motion. | |
| CA98797A | Water motor | |
| US806779A | Water-motor. |