| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 7 | |
| #2 | WIPO (World Intellectual Property Organization) | 2 | |
| #3 | Australia | 1 | |
| #4 | Canada | 1 | |
| #5 | EPO (European Patent Office) | 1 |
| # | Industry | |
|---|---|---|
| #1 | Mechanical elements | |
| #2 | Machines | |
| #3 | Civil engineering |
| # | Technology | |
|---|---|---|
| #1 | Venting or aerating devices | |
| #2 | Unspecified technologies | |
| #3 | Water-closets with flushing devices |
| # | Name | Total Patents |
|---|---|---|
| #1 | Edwards Harry W | 8 |
| #2 | Cole George S | 6 |
| Publication | Filing date | Title |
|---|---|---|
| US6962163B1 | Dual-float snap-action flush valve | |
| US6539973B1 | Water pressure-assisted flush valve | |
| US6123099A | Pinch tube tank level control valve with snap-action shutoff | |
| US5896887A | Pinch tube tank level control valve with snap-action shutoff | |
| US5573037A | Faucet valve with external cam and pinch tubes | |
| US5490536A | Pinch tube proportioning valve and control cam cartridge therefor | |
| US5402823A | Pinch valve |