| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 13 |
| # | Industry | |
|---|---|---|
| #1 | Engines, pumps and turbines | |
| #2 | Machines | |
| #3 | Mechanical elements | |
| #4 | Furniture and games | |
| #5 | Environmental technology | |
| #6 | Thermal processes |
| # | Technology | |
|---|---|---|
| #1 | Non-positive-displacement pumps | |
| #2 | Pumps | |
| #3 | Venting or aerating devices | |
| #4 | Unspecified technologies | |
| #5 | Reduction of greenhouse gas emissions | |
| #6 | Office furniture | |
| #7 | Sanitary equipment | |
| #8 | Refrigerators |
| # | Name | Total Patents |
|---|---|---|
| #1 | Spencer Ira H | 13 |
| Publication | Filing date | Title |
|---|---|---|
| US1251453A | Valve. | |
| US1184040A | Air-pump. | |
| US1226131A | Blower. | |
| US1116639A | Valve for organ-blowers. | |
| US1158738A | Organ-blower. | |
| US1115873A | Organ-blower. | |
| US1044098A | Casing for organ-blowers. | |
| US917971A | Hydraulic rotary pump. | |
| US859139A | Air-valve. | |
| US893756A | Blower. | |
| US835570A | Blower for musical instruments. | |
| US869868A | Organ-blowing apparatus. | |
| US764156A | Hydraulic-motor pump. |