| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 5 | |
| #2 | United Kingdom | 4 | |
| #3 | Germany | 1 | |
| #4 | France | 1 |
| # | Industry | |
|---|---|---|
| #1 | Mechanical elements | |
| #2 | Machines | |
| #3 | Consumer goods |
| # | Technology | |
|---|---|---|
| #1 | Clutches and brakes | |
| #2 | Unspecified technologies | |
| #3 | Frames | |
| #4 | Live-saving devices | |
| #5 | Travel equipment | |
| #6 | Gearing |
| # | Name | Total Patents |
|---|---|---|
| #1 | Firth David | 6 |
| #2 | David Firth | 1 |
| Publication | Filing date | Title |
|---|---|---|
| GB201509255D0 | Electronic device holder apparatus | |
| US3680404A | Variable pitch sheave | |
| US3605440A | Flexible coupling | |
| US3682505A | Means for mounting sheaves, etc. | |
| US3486348A | Flexible coupling | |
| GB1142393A | Improvements relating to flexible couplings for transmitting rotary motion | |
| GB1132460A | Improvements in or relating to flexible couplings | |
| GB1099952A | Improvements in or relating to flexible couplings | |
| US678169A | Fire-escape. |