| # | Country | Total Patents | |
|---|---|---|---|
| #1 | France | 16 | |
| #2 | United States | 2 | |
| #3 | Canada | 1 | |
| #4 | Spain | 1 |
| # | Industry | |
|---|---|---|
| #1 | Packaging and shipping | |
| #2 | Measurement | |
| #3 | Engines, pumps and turbines | |
| #4 | Machines |
| # | Technology | |
|---|---|---|
| #1 | Transferring liquids | |
| #2 | Measuring volume | |
| #3 | Supplying combustion engines | |
| #4 | Controlling combustion engines | |
| #5 | Unspecified technologies |
| # | Name | Total Patents |
|---|---|---|
| #1 | Hermann Wydler | 2 |
| #2 | Wydler Hermann | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US1743745A | Liquid-measuring device with two alternately filled and discharged gauged vessels | |
| US1687417A | Safety device for liquid-measuring apparatus | |
| CA269103A | Liquid measure |