| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 8 | |
| #2 | Brazil | 1 | |
| #3 | Canada | 1 | |
| #4 | Italy | 1 |
| # | Industry | |
|---|---|---|
| #1 | Machines | |
| #2 | Mechanical elements | |
| #3 | Civil engineering | |
| #4 | Control | |
| #5 | Packaging and shipping |
| # | Name | Total Patents |
|---|---|---|
| #1 | Johnson Dwight N | 9 |
| #2 | Johnson D | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US4356574A | Faucet assembly with pinch valves | |
| US4311236A | Package product and method | |
| US4345619A | Backflow preventer | |
| US4313469A | Faucet assembly with pinch valves | |
| US4313460A | Pilot valve | |
| US4240606A | Fill valve | |
| US3952766A | Backflow preventer | |
| US3895645A | Fluid level control valve |