| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Switzerland | 32 | |
| #2 | France | 12 | |
| #3 | Germany | 7 | |
| #4 | Austria | 3 |
| # | Industry | |
|---|---|---|
| #1 | Measurement | |
| #2 | Control | |
| #3 | Mechanical elements | |
| #4 | Packaging and shipping | |
| #5 | Computer technology | |
| #6 | Transport | |
| #7 | Thermal processes | |
| #8 | Civil engineering |
| # | Technology | |
|---|---|---|
| #1 | Measuring volume | |
| #2 | Coin-freed | |
| #3 | Venting or aerating devices | |
| #4 | Containers for goods storage | |
| #5 | Transferring liquids | |
| #6 | Nails | |
| #7 | Counting mechanisms | |
| #8 | Load transportation vehicles | |
| #9 | Locks | |
| #10 | Ignition and extinguishing |
| # | Name | Total Patents |
|---|---|---|
| #1 | Wohlgroth Co H | 18 |
| #2 | Jean Arnold Von Rothen | 5 |
| #3 | Heinz Laeuffer | 4 |
| #4 | Rothen Jean Arnold Von | 2 |
| #5 | Harry Wohlgroth | 2 |
| #6 | Dipl Wohlgroth Harry Ing | 1 |
| #7 | Jean Arnold V Rothen | 1 |
| #8 | Laeuffer Heinz | 1 |
| #9 | A V Rothen J | 1 |
| Publication | Filing date | Title |
|---|---|---|
| DE1274833B | Cover of a counter attached to a measuring device | |
| DE1151419B | Float-operated inlet device on a liquid container | |
| DE1169693B | Monitoring device for liquid container | |
| DE562660C | Dry gas meter | |
| DE449067C | Gas distribution device for dry gas meters | |
| DE407443C | Dry gas meter | |
| DE409216C | Connection piece for dry gas meter |