| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Canada | 8 | |
| #2 | Switzerland | 5 | |
| #3 | Germany | 2 | |
| #4 | United Kingdom | 2 |
| # | Industry | |
|---|---|---|
| #1 | Civil engineering | |
| #2 | Machines | |
| #3 | Mechanical elements | |
| #4 | Transport |
| # | Technology | |
|---|---|---|
| #1 | Earth drilling | |
| #2 | Servomotors | |
| #3 | Unspecified technologies | |
| #4 | Unspecified technologies | |
| #5 | Ships | |
| #6 | Vehicle parts |
| # | Name | Total Patents |
|---|---|---|
| #1 | Whittle Frank | 12 |
| #2 | Frank Whittle | 4 |
| #3 | Walland Hill | 1 |
| Publication | Filing date | Title |
|---|---|---|
| GB9125086D0 | Driving mirror | |
| GB9024255D0 | Convex driving mirror | |
| CA715826A | Floating structures | |
| CA828015A | Methods and apparatus for borehole drilling | |
| CA621741A | Well drilling apparatus | |
| CA719104A | Seals between rotating parts | |
| CA712925A | Oil well drilling equipment | |
| CA619222A | Well drilling systems and methods of operating such systems | |
| CA798664A | Hydraulic turbines for borehole drilling | |
| CA730934A | Fluid pressure motive systems primarily for borehole drilling |