| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Argentina | 2 | |
| #2 | Australia | 2 | |
| #3 | Brazil | 2 | |
| #4 | Canada | 2 | |
| #5 | Germany | 2 | |
| #6 | Finland | 2 | |
| #7 | France | 2 | |
| #8 | United Kingdom | 2 | |
| #9 | Italy | 2 | |
| #10 | Japan | 2 | |
| #11 | Netherlands | 2 | |
| #12 | Sweden | 2 | |
| #13 | South Africa | 2 | |
| #14 | Spain | 1 | |
| #15 | Israel | 1 | |
| #16 | United States | 1 |
| # | Industry | |
|---|---|---|
| #1 | Mechanical elements | |
| #2 | Machines |
| # | Technology | |
|---|---|---|
| #1 | Venting or aerating devices | |
| #2 | Gearing | |
| #3 | Unspecified technologies |
| # | Name | Total Patents |
|---|---|---|
| #1 | Dykes Charles Henry | 3 |
| #2 | Bunyard Alan Donald | 3 |
| #3 | Norris Kenneth William | 3 |
| #4 | Marchant Derek Noel | 3 |
| #5 | Norris Lewis Hunt | 3 |
| #6 | Norris L | 2 |
| #7 | Bunyard A | 2 |
| #8 | Norris K | 2 |
| #9 | Marchant Derek N | 2 |
| #10 | Norris Kenneth W | 2 |
| Publication | Filing date | Title |
|---|---|---|
| US4133215A | Linear-rotary converter | |
| GB1590831A | Linear/rotatory converter | |
| GB1550119A | Plug valve |