| # | Country | Total Patents | |
|---|---|---|---|
| #1 | France | 16 | |
| #2 | Germany | 5 | |
| #3 | United States | 3 | |
| #4 | Switzerland | 1 |
| # | Industry | |
|---|---|---|
| #1 | Machine tools | |
| #2 | Mechanical elements | |
| #3 | Measurement | |
| #4 | Machines |
| # | Name | Total Patents |
|---|---|---|
| #1 | Brown Percy | 16 |
| #2 | Bostock Francis John | 15 |
| #3 | Percy Brown | 4 |
| #4 | John Bostock Francis | 2 |
| #5 | Bostok Francis John | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US2358959A | Grinder guard | |
| US2017396A | Shower bath attachment | |
| US1349811A | Worm-gearing |