| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 4 | |
| #2 | United Kingdom | 4 | |
| #3 | Canada | 3 | |
| #4 | Belgium | 1 | |
| #5 | Switzerland | 1 | |
| #6 | Netherlands | 1 | |
| #7 | United States | 1 |
| # | Industry | |
|---|---|---|
| #1 | Telecommunications | |
| #2 | Furniture and games |
| # | Technology | |
|---|---|---|
| #1 | Selecting | |
| #2 | Physical training equipment |
| # | Name | Total Patents |
|---|---|---|
| #1 | Mercer Richard | 11 |
| Publication | Filing date | Title |
|---|---|---|
| GB9924568D0 | Snap on rake head for golf club | |
| US2621255A | Telephone system with cyclic route busy test | |
| GB656599A | Improvements in or relating to telephone systems | |
| GB656559A | Improvements in or relating to telephone systems | |
| GB190407916A | Improvements in the Method of Fastening Boots and Shoes. | |
| CA266659A | Telephone system | |
| CA497326A | Telephone systems | |
| CA497327A | Telecommunication systems |