| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 9 | |
| #2 | Canada | 2 |
| # | Industry | |
|---|---|---|
| #1 | Mechanical elements | |
| #2 | Packaging and shipping | |
| #3 | Machines | |
| #4 | Transport | |
| #5 | Civil engineering |
| # | Technology | |
|---|---|---|
| #1 | Pipes | |
| #2 | Unspecified technologies | |
| #3 | Closing and opening bottles | |
| #4 | Containers for goods storage | |
| #5 | Unspecified technologies | |
| #6 | Fire-fighting | |
| #7 | Ships | |
| #8 | Venting or aerating devices | |
| #9 | Pistons and sealings |
| # | Name | Total Patents |
|---|---|---|
| #1 | Walters Tom | 11 |
| Publication | Filing date | Title |
|---|---|---|
| US4641859A | Coupling having spring biased locking means | |
| US4168764A | Level step stair walkway | |
| US4084786A | Valves | |
| US4037891A | Gland seal compression | |
| US4039213A | Couplings | |
| CA1042941A | Hose coupling | |
| US3972450A | Containers | |
| US3990608A | Container tapping devices | |
| US3923192A | Container aperture adaptors | |
| US3922011A | Hose coupling | |
| CA801633A | Coupling |