| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United Kingdom | 4 | |
| #2 | Canada | 2 | |
| #3 | Germany | 2 | |
| #4 | South Africa | 2 | |
| #5 | United States | 1 |
| # | Industry | |
|---|---|---|
| #1 | Transport | |
| #2 | Mechanical elements |
| # | Technology | |
|---|---|---|
| #1 | Motor vehicles | |
| #2 | Vehicle brake control systems | |
| #3 | Clutches and brakes |
| # | Name | Total Patents |
|---|---|---|
| #1 | Hope Frederick John | 2 |
| #2 | Hope Frederick J | 2 |
| #3 | George Lambert Frederick | 2 |
| #4 | Pigney J | 2 |
| #5 | John Datchet Hope Frederick | 2 |
| #6 | Hope Frederick John Charles | 2 |
| #7 | Pigney James Malcolm | 2 |
| #8 | Lambert Frederick G | 2 |
| #9 | Hope F | 2 |
| #10 | Hope Freiderick John Charles | 1 |
| Publication | Filing date | Title |
|---|---|---|
| ZA7203733B | Locking device for fifth wheel coupling | |
| GB1249909A | Coupling devices for articulated vehicles | |
| GB1267518A | Improvements in or relating to devices for indicating the operating condition of brakes | |
| GB1249867A | Improvements to trailers | |
| GB1142849A | Friction damping device for fifth wheel couplings | |
| CA815414A | Anti-jack knife brake device for trailers | |
| CA797701A | Anti-jack knife device for trailers |