| # | Country | Total Patents | |
|---|---|---|---|
| #1 | France | 4 | |
| #2 | United Kingdom | 3 | |
| #3 | Canada | 2 | |
| #4 | United States | 2 | |
| #5 | Belgium | 1 | |
| #6 | Switzerland | 1 | |
| #7 | Germany | 1 | |
| #8 | Spain | 1 |
| # | Industry | |
|---|---|---|
| #1 | Engines, pumps and turbines | |
| #2 | Mechanical elements | |
| #3 | Machines |
| # | Technology | |
|---|---|---|
| #1 | Internal-combustion piston engines | |
| #2 | Gearing | |
| #3 | Unspecified technologies |
| # | Name | Total Patents |
|---|---|---|
| #1 | Ehrlich Josef | 5 |
| #2 | Josef Ehrlich | 3 |
| #3 | Murrell Frederick G | 1 |
| Publication | Filing date | Title |
|---|---|---|
| GB1118043A | Internal combustion engines | |
| GB1063125A | Reciprocating internal combustion engines | |
| GB1104121A | Internal combustion engines | |
| DE1202062B | Internal combustion piston engine | |
| CA774383A | Internal combustion engines | |
| CA717771A | Reciprocating internal combustion engines operating on the two-stroke cycle |