| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 4 | |
| #2 | Canada | 2 | |
| #3 | France | 2 | |
| #4 | United Kingdom | 2 | |
| #5 | Germany | 1 |
| # | Industry | |
|---|---|---|
| #1 | Civil engineering | |
| #2 | Machine tools | |
| #3 | Machines |
| # | Technology | |
|---|---|---|
| #1 | Earth drilling | |
| #2 | Accessories for machine tools | |
| #3 | Unspecified technologies |
| # | Name | Total Patents |
|---|---|---|
| #1 | Kelley George S | 4 |
| #2 | Kelley George Sylvester | 2 |
| Publication | Filing date | Title |
|---|---|---|
| DE627940C | Dust hood for collecting rock drilling dust | |
| GB422328A | Improvements in or relating to dust collecting hoods for rock drills | |
| US1930099A | Dust collecting device | |
| US1969513A | Dust deflector | |
| GB400311A | Improvements in dust removal apparatus for percussive drills | |
| US1972846A | Dust deflector | |
| US1928291A | Dust deflector | |
| CA328083A | Dust removal apparatus | |
| CA349007A | Dust deflector |