| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Switzerland | 3 | |
| #2 | France | 3 | |
| #3 | EPO (European Patent Office) | 2 | |
| #4 | Italy | 2 | |
| #5 | Netherlands | 2 | |
| #6 | Sweden | 2 | |
| #7 | Germany | 1 | |
| #8 | United Kingdom | 1 |
| # | Industry | |
|---|---|---|
| #1 | Measurement | |
| #2 | Mechanical elements |
| # | Technology | |
|---|---|---|
| #1 | Measuring volume | |
| #2 | Venting or aerating devices |
| # | Name | Total Patents |
|---|---|---|
| #1 | Spiess Fritz | 5 |
| #2 | Koch Peter | 3 |
| #3 | Muntwyler Stephan | 3 |
| #4 | Spiess F | 2 |
| #5 | Markwat Willem Jan | 2 |
| #6 | Koch P | 1 |
| Publication | Filing date | Title |
|---|---|---|
| EP0708312A1 | Flowmeter | |
| CH688834A5 | Distributor with liquid flowmeter. | |
| CH683284A5 | Valve handle which may be locked in either open or closed position - has two fixed stops 90 deg. apart and movable stop released by large knob engaging stop on valve casing | |
| NL8302483A | Flow control device. | |
| CH655985A5 | Stopcock. | |
| FR2480936A1 | FLOW ADJUSTMENT APPARATUS, PARTICULARLY FOR LIQUID PIPING |