| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 9 | |
| #2 | Canada | 5 |
| # | Industry | |
|---|---|---|
| #1 | Civil engineering | |
| #2 | Mechanical elements | |
| #3 | Machine tools | |
| #4 | Machines |
| # | Technology | |
|---|---|---|
| #1 | Structural elements | |
| #2 | General building constructions | |
| #3 | Clutches and brakes | |
| #4 | Turning | |
| #5 | Unspecified technologies |
| # | Name | Total Patents |
|---|---|---|
| #1 | Hutchinson William S | 14 |
| Publication | Filing date | Title |
|---|---|---|
| US2551948A | Boring bar | |
| US1354560A | Floor construction | |
| US1368557A | Floor construction | |
| US1413584A | Roof construction | |
| US1369340A | Girder | |
| US1291529A | Mill-building roof-system support and crane-column. | |
| US1344229A | Girder | |
| CA168483A | Drum brake | |
| US1192316A | Brake. | |
| US1192523A | Drum-brake. | |
| CA163388A | Drum brake | |
| CA13629A | Improvements on steam boilers and other furnaces | |
| CA6727A | Improvements on steam boiler and other furnaces | |
| CA30488A | Air injector for furnaces |