| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 15 | |
| #2 | Canada | 5 |
| # | Industry | |
|---|---|---|
| #1 | Civil engineering | |
| #2 | Machine tools | |
| #3 | Machines | |
| #4 | Engines, pumps and turbines | |
| #5 | Mechanical elements |
| # | Technology | |
|---|---|---|
| #1 | Earth drilling | |
| #2 | Making forged metal products | |
| #3 | Unspecified technologies | |
| #4 | Sawing | |
| #5 | Controlling combustion engines | |
| #6 | Clutches and brakes | |
| #7 | Unspecified technologies | |
| #8 | Thread cutting | |
| #9 | Turning |
| # | Name | Total Patents |
|---|---|---|
| #1 | Watson George R | 16 |
| #2 | Vandegrift Nathaniel W | 1 |
| #3 | Andrianoff Theodore C | 1 |
| #4 | Armstrong Charles L | 1 |
| #5 | Sanford Frank C | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US2292595A | Saw grinder | |
| US1750826A | Well-drilling apparatus | |
| US1551717A | Drill bit | |
| US1554247A | Shaper for drill bits | |
| US1540047A | Drill bit | |
| US1540048A | Drill bit | |
| US1561580A | Drill bit | |
| US1580872A | Drill bit | |
| US1510726A | Drill-bit shaper and sharpener | |
| US1495051A | Device for shaping drills | |
| US1489871A | Speed-finding regulator | |
| US1405468A | Weldless drill jar | |
| US1119765A | Die-stock. | |
| US1051854A | Friction-clutch. | |
| US635987A | Thread-cutting tool. | |
| CA282122A | Drill shaper | |
| CA261742A | Sharpener and shaper | |
| CA255955A | Drill bit | |
| CA280512A | Drill-bit | |
| CA261743A | Apparatus for shaping drill-bits |