| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 56 | |
| #2 | Canada | 1 |
| # | Industry | |
|---|---|---|
| #1 | Mechanical elements | |
| #2 | Machines | |
| #3 | Machine tools | |
| #4 | Thermal processes |
| # | Technology | |
|---|---|---|
| #1 | Venting or aerating devices | |
| #2 | Unspecified technologies | |
| #3 | Unspecified technologies | |
| #4 | Pipes | |
| #5 | Burners | |
| #6 | Tools for connecting or disengaging | |
| #7 | Turning | |
| #8 | Preheating for stem generation | |
| #9 | Punching metal | |
| #10 | Metal wire processing |
| # | Name | Total Patents |
|---|---|---|
| #1 | Norwood Bard Francis | 8 |
| #2 | Morehead French H | 7 |
| #3 | Trott Arthur J | 7 |
| #4 | Martin Jr Jesse C | 6 |
| #5 | Mattimore John D | 6 |
| #6 | Harry Mccarthy | 5 |
| #7 | Hugh Morehead French | 3 |
| #8 | Cotton Charles H | 3 |
| #9 | Henderson Albert J | 3 |
| #10 | Harman John J | 3 |
| Publication | Filing date | Title |
|---|---|---|
| US2406957A | Handwheel attaching means | |
| US2448907A | Pipe joint | |
| US2375674A | Valve | |
| US2364929A | Valve | |
| US2357965A | Valve | |
| US2364907A | Valve | |
| US2336694A | Valve | |
| US2340999A | Motor operated valve | |
| US2342422A | High pressure joint | |
| US2324633A | Locking device | |
| US2352140A | Power-operated valve | |
| US2322379A | Lubricated plug valve | |
| US2283076A | Valve | |
| US2274876A | Valve | |
| US2265526A | Lubricating device | |
| US2207067A | Combined reamer and undercutter | |
| US2161626A | Locking device | |
| US2212572A | Valve | |
| US2125942A | Valve | |
| US2175867A | Valve |