| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 6 | |
| #2 | Canada | 4 | |
| #3 | United Kingdom | 4 |
| # | Industry | |
|---|---|---|
| #1 | Machine tools | |
| #2 | Machines | |
| #3 | Mechanical elements | |
| #4 | Civil engineering |
| # | Technology | |
|---|---|---|
| #1 | Unspecified technologies | |
| #2 | Turning | |
| #3 | Woodworking tools | |
| #4 | Earth drilling | |
| #5 | Workshop equipment | |
| #6 | Nails | |
| #7 | Nailing machines | |
| #8 | Accessories for machine tools |
| # | Name | Total Patents |
|---|---|---|
| #1 | Caldwell John William | 14 |
| Publication | Filing date | Title |
|---|---|---|
| CA154689A | Bit for boring | |
| GB191316255A | Improvements in Wood Boring and Mortising Bits. | |
| US1066708A | Bit for boring square and angular-shaped holes. | |
| US1066707A | Expansion-bit. | |
| CA141975A | Door lock | |
| CA135241A | Auger bit | |
| GB191113484A | Improvements in Wood Boring Bits. | |
| GB191000179A | Improvements in Expansion Augers. | |
| US996612A | Auger-bit. | |
| US945016A | Expansion-auger. | |
| US940426A | Auger-bit. | |
| CA71423A | Screw | |
| GB189921260A | Improvements in Wood and like Screws and in Screwed Shanks for various Articles. | |
| US635297A | Screw. |