| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 4 | |
| #2 | China | 2 | |
| #3 | Australia | 1 | |
| #4 | Brazil | 1 | |
| #5 | Canada | 1 | |
| #6 | Denmark | 1 | |
| #7 | EPO (European Patent Office) | 1 | |
| #8 | India | 1 | |
| #9 | Japan | 1 | |
| #10 | Republic of Korea | 1 | |
| #11 | Mexico | 1 | |
| #12 | Norway | 1 | |
| #13 | New Zealand | 1 |
| # | Industry | |
|---|---|---|
| #1 | Machines | |
| #2 | Civil engineering |
| # | Technology | |
|---|---|---|
| #1 | Unspecified technologies | |
| #2 | Locks |
| # | Name | Total Patents |
|---|---|---|
| #1 | Bretl Robert J | 13 |
| #2 | Taylor Jewell A | 13 |
| #3 | Robaato Jiei Buretouru | 1 |
| #4 | Robert J Bretl | 1 |
| #5 | Taylor Jewell | 1 |
| #6 | Cheng Ching-Hsiung | 1 |
| #7 | Jiyueru Ei Teiraa | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US4952228A | Push-button padlocks having swivel-only shackles | |
| CN1040647A | Press-button lock | |
| US4862714A | Push-button padlocks having swivel-only shackles | |
| US4829795A | Anti-pry padlock and method of use | |
| US4751830A | Push-button padlock with secondary key |