| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 35 | |
| #2 | France | 4 | |
| #3 | Austria | 2 | |
| #4 | Switzerland | 1 | |
| #5 | Finland | 1 | |
| #6 | United Kingdom | 1 |
| # | Industry | |
|---|---|---|
| #1 | Mechanical elements | |
| #2 | Machines | |
| #3 | Measurement | |
| #4 | Chemical engineering | |
| #5 | Engines, pumps and turbines | |
| #6 | Materials and metallurgy |
| # | Technology | |
|---|---|---|
| #1 | Compressed gas holders | |
| #2 | Unspecified technologies | |
| #3 | Measuring volume | |
| #4 | Shaping clay | |
| #5 | Liquefaction of gases by pressure | |
| #6 | Unspecified technologies | |
| #7 | Internal-combustion piston engines | |
| #8 | Pumps | |
| #9 | Venting or aerating devices | |
| #10 | Alloys |
| # | Name | Total Patents |
|---|---|---|
| #1 | Dr-Ing H C C W Paul Heylandt | 3 |
| #2 | Ehms Dipl-Ing Hermann | 2 |
| #3 | Heyland Dr-Ing H C C W Paul | 2 |
| #4 | Mesinger William Fred | 1 |
| #5 | Fuer Industriegasverwertung Ak | 1 |
| #6 | Jan Putterlik | 1 |
| #7 | Zenner George Henry | 1 |
| #8 | Dr-Ing H C W Paul Heylandt | 1 |
| Publication | Filing date | Title |
|---|---|---|
| DE655248C | Liquid level indicator | |
| GB455580A | Improvements relating to the manufacture of closed, hollow bodies from plastic materials |