| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Switzerland | 7 | |
| #2 | Canada | 4 | |
| #3 | Denmark | 1 |
| # | Industry | |
|---|---|---|
| #1 | Mechanical elements | |
| #2 | Engines, pumps and turbines |
| # | Technology | |
|---|---|---|
| #1 | Gearing | |
| #2 | Cyclically operating valves | |
| #3 | Pistons and sealings |
| # | Name | Total Patents |
|---|---|---|
| #1 | Ernst Karl Sparmann Edmund | 7 |
| #2 | Sparmann Edmund Ernst Karl | 5 |
| Publication | Filing date | Title |
|---|---|---|
| CA488816A | Piston engines of the wobbler drive type | |
| CA488332A | Two-cycle motors | |
| CA478661A | Means for anchoring wobble-plates | |
| CA456116A | Wobbler drive |