| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Canada | 8 | |
| #2 | France | 4 | |
| #3 | Germany | 3 | |
| #4 | Belgium | 2 | |
| #5 | Switzerland | 1 | |
| #6 | United Kingdom | 1 | |
| #7 | United States | 1 |
| # | Industry | |
|---|---|---|
| #1 | Civil engineering | |
| #2 | Machines | |
| #3 | Engines, pumps and turbines |
| # | Technology | |
|---|---|---|
| #1 | Earth drilling | |
| #2 | Unspecified technologies | |
| #3 | Positive-displacement engines | |
| #4 | Rotary-pistons |
| # | Name | Total Patents |
|---|---|---|
| #1 | Mayall William | 13 |
| #2 | Thomasson Thomas | 1 |
| #3 | William Mayall | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US4105377A | Hydraulic roller motor | |
| FR2184342A5 | Hydraulic motor (turbine) - for driving drill bit indrilling boreholes | |
| CA950266A | Rock drills | |
| GB1235656A | Improvements in or relating to earth drilling apparatus | |
| CA149767A | Signal apparatus | |
| CA202716A | Electric heater | |
| CA197998A | Cooling system for internal combustion motors | |
| CA33290A | Automatic fire extinguishing sprinkler and alarm apparatus used in conjuction therewith | |
| CA619260A | Towel dispenser mechanism | |
| CA633698A | Dashpot | |
| CA900952A | Magnetic junk collecting apparatus |