| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 1,610 | |
| #2 | United Kingdom | 80 | |
| #3 | Canada | 54 | |
| #4 | France | 27 | |
| #5 | Germany | 24 |
| # | Industry | |
|---|---|---|
| #1 | Civil engineering | |
| #2 | Machines | |
| #3 | Engines, pumps and turbines | |
| #4 | Machine tools | |
| #5 | Packaging and shipping |
| # | Technology | |
|---|---|---|
| #1 | Mining | |
| #2 | Earth drilling | |
| #3 | Unspecified technologies | |
| #4 | Pumps | |
| #5 | Percussive tools | |
| #6 | Winches | |
| #7 | Making forged metal products | |
| #8 | Forging | |
| #9 | Siphons | |
| #10 | Unspecified technologies |
| # | Name | Total Patents |
|---|---|---|
| #1 | Holmes Morris P | 215 |
| #2 | Gartin Elmer G | 158 |
| #3 | Osgood Charles F | 131 |
| #4 | Wineman Wade H | 78 |
| #5 | Gilman George H | 77 |
| #6 | Joy Joseph F | 66 |
| #7 | Holdsworth Fred D | 66 |
| #8 | Mercer Henry H | 59 |
| #9 | Wyman Charles W | 53 |
| #10 | Osgood Robert C | 42 |
| Publication | Filing date | Title |
|---|---|---|
| GB608834A | Drilling apparatus | |
| GB620664A | Improvements in and relating to cuttings-conveyor mechanism for coal cutting machines | |
| US2394806A | Drill steel guide | |
| US2365975A | Cutter chain | |
| US2394006A | Material haulage vehicle | |
| US2385349A | Chuck mechanism | |
| US2378965A | Expansible chamber motor | |
| GB582282A | Improvements in and relating to rotary air pumping apparatus | |
| US2393001A | Cutter chain | |
| US2337312A | Chuck mechanism | |
| US2390251A | Cutter chain | |
| US2365176A | Portable drill rig | |
| US2392178A | Valve device | |
| US2350661A | Drill steel guide | |
| US2365234A | Pump mechanism | |
| US2365229A | Pivoted link chain | |
| US2365911A | Pivoted link chain | |
| US2351206A | Cutter chain | |
| US2391485A | Cutter chain | |
| US2355523A | Chain breaker |