| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 13 |
| # | Industry | |
|---|---|---|
| #1 | Machines | |
| #2 | Packaging and shipping | |
| #3 | Engines, pumps and turbines | |
| #4 | Machine tools | |
| #5 | Thermal processes | |
| #6 | Civil engineering |
| # | Technology | |
|---|---|---|
| #1 | Unspecified technologies | |
| #2 | Pumps | |
| #3 | Shaping clay | |
| #4 | Punching metal | |
| #5 | Siphons | |
| #6 | Transferring liquids | |
| #7 | Winches | |
| #8 | Locks | |
| #9 | Heat-exchanger without contact | |
| #10 | Transport or storage devices |
| # | Name | Total Patents |
|---|---|---|
| #1 | Holmgreen Julius H | 13 |
| #2 | Underwood William H | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US1928178A | Water hose cabinet for filling stations | |
| US1609250A | Pull rod pump jack | |
| US1556832A | Pull-rod pump jack | |
| US1601446A | Attachment for tractors | |
| US1505026A | Meter box | |
| US1372816A | Bending-machine and method of bending | |
| US1465733A | Bending machine | |
| US1383117A | Method of casting the hulls of ships from concrete and floating said hulls into a launching-bay | |
| US1383118A | Mold for casting the hulls of concrete ships | |
| US1256563A | Fastener for meter-boxes. | |
| US1275558A | Silo. | |
| US1033895A | Air-lift pump. | |
| US843894A | Refrigerating apparatus. |