| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 10 | |
| #2 | Canada | 1 |
| # | Industry | |
|---|---|---|
| #1 | Civil engineering | |
| #2 | Environmental technology | |
| #3 | Packaging and shipping | |
| #4 | Transport |
| # | Technology | |
|---|---|---|
| #1 | General building constructions | |
| #2 | Hydraulic engineering | |
| #3 | Cranes | |
| #4 | Parachutes | |
| #5 | Climate change adaptation technologies |
| # | Name | Total Patents |
|---|---|---|
| #1 | Harp Charles B | 11 |
| Publication | Filing date | Title |
|---|---|---|
| US2442358A | Desilting basin | |
| US2426771A | Airplane mounted fire extinguishing apparatus | |
| US1986148A | Silt removing head | |
| US1778942A | Desilting nozzle head | |
| US1777491A | Method of desilting channels | |
| CA157863A | Hollow wall | |
| US1146251A | Building-tie. | |
| US1142093A | Building construction. | |
| US1083537A | Grab-hook. | |
| US1088417A | Bond for hollow-wall construction. | |
| US1063439A | Bond and reinforcement for hollow-wall construction. |