| # | Country | Total Patents | |
|---|---|---|---|
| #1 | France | 4 | |
| #2 | Belgium | 3 | |
| #3 | Germany | 3 | |
| #4 | United Kingdom | 2 | |
| #5 | Austria | 1 | |
| #6 | United States | 1 |
| # | Industry | |
|---|---|---|
| #1 | Engines, pumps and turbines | |
| #2 | Measurement | |
| #3 | Environmental technology | |
| #4 | Mechanical elements |
| # | Name | Total Patents |
|---|---|---|
| #1 | Hubrich Dipl-Ing Christoph | 1 |
| #2 | Grote Dipl-Ing Paul | 1 |
| #3 | Paul Grote | 1 |
| #4 | Simonsmeier Walter | 1 |
| Publication | Filing date | Title |
|---|---|---|
| DE1059732B | Safety valve | |
| DE1166970B | Resonance silencer for twin-shaft rotary piston engines | |
| US2710540A | Rotary impeller gas meters | |
| GB686144A | Rotating impeller gas-meter | |
| DE723712C | Device for adjusting the rotary lobes of rotary piston machines | |
| GB191203525A | Improvements in or relating to Turbine Compressor or Pumps. |