| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Canada | 6 | |
| #2 | United Kingdom | 5 | |
| #3 | United States | 3 | |
| #4 | Austria | 2 | |
| #5 | Switzerland | 2 | |
| #6 | Denmark | 1 | |
| #7 | Spain | 1 |
| # | Industry | |
|---|---|---|
| #1 | Machine tools | |
| #2 | Machines | |
| #3 | Mechanical elements |
| # | Technology | |
|---|---|---|
| #1 | Thread cutting | |
| #2 | Making forged metal products | |
| #3 | Turning | |
| #4 | Nails | |
| #5 | Unspecified technologies | |
| #6 | Accessories for machine tools |
| # | Name | Total Patents |
|---|---|---|
| #1 | Robertson Peter Lymburner | 17 |
| #2 | Peter Lymburner Robertson | 2 |
| Publication | Filing date | Title |
|---|---|---|
| GB191119574A | Improvements in Blank Feeding Mechanism. | |
| GB191106522A | Improvements in Automatic Screw Cutting and Finishing Machines. | |
| GB191200440A | Improvements in Devices for Regulating the Threading Tools for Screw Machines. | |
| GB191119575A | Improvements in Chucking Mechanism. | |
| CA138889A | Screw making machine | |
| US1051915A | Screw-machine. | |
| US1003657A | Screw-blank-heading machine. | |
| CA131165A | Screw manufacture | |
| GB190911490A | Improvements in Screw Blank Heading Machines. | |
| CA110405A | Screw driver | |
| CA116463A | Screw | |
| US975285A | Screw. | |
| CA95620A | Corkscrew | |
| CA297944A | Tool holder |