| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Canada | 3 | |
| #2 | United States | 3 | |
| #3 | Australia | 2 | |
| #4 | EPO (European Patent Office) | 2 | |
| #5 | WIPO (World Intellectual Property Organization) | 2 |
| # | Industry | |
|---|---|---|
| #1 | Transport | |
| #2 | Measurement | |
| #3 | Machines | |
| #4 | Mechanical elements |
| # | Technology | |
|---|---|---|
| #1 | Vehicle connections | |
| #2 | Unspecified technologies | |
| #3 | Measuring volume | |
| #4 | Vehicle servicing | |
| #5 | Venting or aerating devices | |
| #6 | Motor vehicles | |
| #7 | Vehicle suspension arrangements | |
| #8 | Analysing materials |
| # | Name | Total Patents |
|---|---|---|
| #1 | Sargent Frank T | 12 |
| #2 | Sargent John S | 1 |
| Publication | Filing date | Title |
|---|---|---|
| AU5449500A | Double-acting trailer hitch | |
| WO0001546A1 | Adjustable coupler for a weight distributing trailer hitch apparatus | |
| US4253679A | Trailer hitch carriage | |
| US3232577A | Gate valve with sectional body | |
| US2544185A | Trailer hitch |