| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United Kingdom | 6 | |
| #2 | United States | 3 | |
| #3 | Brazil | 1 | |
| #4 | Republic of Korea | 1 |
| # | Industry | |
|---|---|---|
| #1 | Machine tools | |
| #2 | Electrical machinery and energy | |
| #3 | Machines | |
| #4 | Mechanical elements |
| # | Technology | |
|---|---|---|
| #1 | Tools for connecting or disengaging | |
| #2 | Electric motor controls | |
| #3 | Electrically-conductive connections | |
| #4 | Nails | |
| #5 | Unspecified technologies |
| # | Name | Total Patents |
|---|---|---|
| #1 | Totsu K | 5 |
| #2 | Morifuji N | 1 |
| #3 | Shimizu T | 1 |
| Publication | Filing date | Title |
|---|---|---|
| KR820001049B1 | Electrically driven fastening appliance | |
| GB2002665A | Electrically driven fastening appliance | |
| US3745861A | Plug holding socket | |
| US3753454A | Screw driver bit with double blades |