| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 11 |
| # | Industry | |
|---|---|---|
| #1 | Machines | |
| #2 | Engines, pumps and turbines | |
| #3 | Civil engineering | |
| #4 | Mechanical elements | |
| #5 | Electrical machinery and energy | |
| #6 | Control | |
| #7 | Packaging and shipping | |
| #8 | Thermal processes |
| # | Technology | |
|---|---|---|
| #1 | Unspecified technologies | |
| #2 | Earth drilling | |
| #3 | Pumps | |
| #4 | Venting or aerating devices | |
| #5 | Electric switches | |
| #6 | Systems controlling non-electric variables | |
| #7 | Winches | |
| #8 | Steam generation |
| # | Name | Total Patents |
|---|---|---|
| #1 | George Gartling | 5 |
| #2 | Otto Marks Donn | 3 |
| #3 | Phillips Arthur A | 1 |
| #4 | Hahn John | 1 |
| #5 | Fort James | 1 |
| #6 | Schelling Oscar | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US1708276A | Electromagnetic valve | |
| US1744276A | Valve-position-indicating means and circuit closer | |
| US1746933A | Well-drill bit | |
| US1765377A | Magnetic valve | |
| US1634869A | Rotary well-drilling bit | |
| US1669610A | Triple-shell water-tube boiler | |
| US1389428A | Cable-pump | |
| US1444180A | Chain pump | |
| US1090570A | Rope-socket. | |
| US905303A | Underreamer. | |
| US753828A | Pump. |