| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United Kingdom | 3 | |
| #2 | Belgium | 2 | |
| #3 | Canada | 2 | |
| #4 | Germany | 2 | |
| #5 | Denmark | 2 | |
| #6 | France | 2 | |
| #7 | United States | 2 | |
| #8 | Sweden | 1 |
| # | Industry | |
|---|---|---|
| #1 | Machine tools | |
| #2 | Machines | |
| #3 | Mechanical elements |
| # | Technology | |
|---|---|---|
| #1 | Milling | |
| #2 | Clutches and brakes | |
| #3 | Unspecified technologies | |
| #4 | Turning |
| # | Name | Total Patents |
|---|---|---|
| #1 | Henry Clarkson Frank | 4 |
| #2 | Horton Geoffrey | 4 |
| #3 | Clarkson Frank Henry | 2 |
| #4 | Clarkson John B | 2 |
| #5 | Clarkson Frank H | 2 |
| #6 | Clarkson F | 1 |
| #7 | Savage Terry Edward | 1 |
| #8 | Clarkson J | 1 |
| #9 | Clarkson John Barry | 1 |
| #10 | Horton G | 1 |
| Publication | Filing date | Title |
|---|---|---|
| GB1061992A | Improvements in or relating to milling cutters | |
| US3139800A | Holder for milling cutters and like rotary tools | |
| FR1304260A | Chuck for firm and precise holding of a tool in working position | |
| FR1304259A | Toolbox | |
| GB915713A | Improvements in chucks | |
| GB977397A | An improved holder for milling cutters and like rotary tools | |
| CA699049A | Holder for milling cutters and like rotary tools | |
| CA684953A | Chucks |