| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 5 | |
| #2 | United Kingdom | 4 | |
| #3 | Canada | 3 | |
| #4 | Germany | 3 | |
| #5 | France | 3 | |
| #6 | Italy | 3 | |
| #7 | Norway | 3 |
| # | Industry | |
|---|---|---|
| #1 | Mechanical elements | |
| #2 | Machines |
| # | Technology | |
|---|---|---|
| #1 | Venting or aerating devices | |
| #2 | Unspecified technologies |
| # | Name | Total Patents |
|---|---|---|
| #1 | Hendrick Fred Woodson | 13 |
| #2 | Hendrick Fred W | 7 |
| #3 | Brooks Bobby Leon | 5 |
| #4 | Woodson Hendrick Fred | 2 |
| #5 | Brooks Bobby | 2 |
| #6 | Hendricks Fred W | 1 |
| #7 | Woodson Fred Hendrick | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US5063954A | Multiple orifice valve with reduced operator torque | |
| US5054521A | Multiple orifice valve with improved turn-down ratio | |
| US5088689A | Removable discharge sleeve in a disk valve | |
| CA1318218C | Removable discharge sleeve in a disk valve | |
| US4901977A | Gear drive for a disk | |
| US5025833A | Disk valve |