| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 40 | |
| #2 | Canada | 19 | |
| #3 | Switzerland | 7 | |
| #4 | France | 5 | |
| #5 | Germany | 3 | |
| #6 | United Kingdom | 3 | |
| #7 | Austria | 2 |
| # | Industry | |
|---|---|---|
| #1 | Mechanical elements | |
| #2 | Machines | |
| #3 | Transport | |
| #4 | Machine tools | |
| #5 | Engines, pumps and turbines | |
| #6 | Chemical engineering |
| # | Technology | |
|---|---|---|
| #1 | Pistons and sealings | |
| #2 | Unspecified technologies | |
| #3 | Locomotives | |
| #4 | Machines | |
| #5 | Venting or aerating devices | |
| #6 | Cleaning | |
| #7 | Sawing | |
| #8 | Lubricating | |
| #9 | Unspecified technologies | |
| #10 | Metal-working |
| # | Name | Total Patents |
|---|---|---|
| #1 | Price Jr Joseph W | 28 |
| #2 | Light Ralph A | 28 |
| #3 | Light Ralph Atlee | 11 |
| #4 | Price Joseph Washington Jr | 11 |
| #5 | King Charles W G | 8 |
| #6 | Company The United States Meta | 6 |
| #7 | Price Joseph W Jr | 4 |
| #8 | Trevor Mclain Harry | 1 |
| #9 | Packing Company United States | 1 |
| #10 | Longstreth Charles | 1 |
| Publication | Filing date | Title |
|---|---|---|
| GB580997A | Improvements in segmental packing rings | |
| US2375869A | Segmental packing ring | |
| US2333196A | Metallic packing ring for locomotive piston rods and the like | |
| US2160753A | Double-acting ratchet mechanism | |
| US2126198A | Automatic lubricator | |
| US2089148A | Lading and condition indicator for freight cars | |
| US2083610A | Cylinder cock | |
| US2033078A | Bell ringing mechanism | |
| US2108228A | Cylinder cock | |
| US2023601A | Operative mechanism for locomotive cylinder cocks | |
| US2015019A | Piston packing | |
| US2032425A | Valve cock | |
| US2054772A | Check valve | |
| US1982614A | Piston packing | |
| US1942360A | Bell ringing mechanism | |
| US1993891A | Valve construction | |
| US1879810A | Sand trap | |
| US1958091A | Cylinder cock | |
| US1836177A | Automatic air distributing valve for sander systems | |
| US1854994A | Sand trap |