| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United Kingdom | 12 | |
| #2 | United States | 7 | |
| #3 | Mexico | 6 | |
| #4 | Canada | 5 | |
| #5 | Germany | 4 | |
| #6 | France | 4 | |
| #7 | Norway | 3 |
| # | Industry | |
|---|---|---|
| #1 | Civil engineering | |
| #2 | Mechanical elements | |
| #3 | Machines |
| # | Technology | |
|---|---|---|
| #1 | Earth drilling | |
| #2 | Servomotors | |
| #3 | Unspecified technologies |
| # | Name | Total Patents |
|---|---|---|
| #1 | Jones Marvin Richard | 26 |
| #2 | Jones Marvin R | 11 |
| #3 | Howard Roland Mccauley Jr | 3 |
| #4 | Marvin Richard Jones | 2 |
| #5 | Howard Roland M Jr | 2 |
| #6 | Howard Jr Roland M | 2 |
| #7 | Howard Jun Roland Mccauley | 1 |
| #8 | Howard Roland Mccauley | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US4580626A | Blowout preventers having shear rams | |
| US4519571A | Fluid operated, axially reciprocating actuator | |
| US4519577A | Flow controlling apparatus | |
| US4589625A | Hydraulically operated valves | |
| US4508313A | Valves | |
| US4523639A | Ram type blowout preventers | |
| CA1200196A | Valve apparatus | |
| CA1197182A | Fluid operated, axially reciprocating actuator | |
| CA1197181A | Valves | |
| US4582293A | Hydraulically operated valves |