| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 12 |
| # | Industry | |
|---|---|---|
| #1 | Mechanical elements | |
| #2 | Machines | |
| #3 | Engines, pumps and turbines |
| # | Technology | |
|---|---|---|
| #1 | Pipes | |
| #2 | Unspecified technologies | |
| #3 | Venting or aerating devices | |
| #4 | Unspecified technologies | |
| #5 | Pistons and sealings | |
| #6 | Shafts | |
| #7 | Cyclically operating valves |
| # | Name | Total Patents |
|---|---|---|
| #1 | Norwood Bard Francis | 12 |
| Publication | Filing date | Title |
|---|---|---|
| US1920545A | Pipe coupling | |
| US1928279A | Pipe joint | |
| US1866835A | Pipe coupling and insulation therefor | |
| US1869363A | Reverse gear mechanism | |
| US1778746A | Self-lubricating valve | |
| US1744255A | Lubricated plug valve | |
| US1758212A | Crosshead | |
| US1702958A | Process of making gaskets | |
| US1849702A | Fluid delivery | |
| US1702957A | Process of making gaskets | |
| US1346524A | Composite non-metallic gasket | |
| US1346523A | Composite non-metallic gasket |