| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 14 |
| # | Industry | |
|---|---|---|
| #1 | Mechanical elements | |
| #2 | Machine tools | |
| #3 | Machines |
| # | Technology | |
|---|---|---|
| #1 | Pistons and sealings | |
| #2 | Metal wire processing | |
| #3 | Unspecified technologies | |
| #4 | Turning | |
| #5 | Metal-working | |
| #6 | Accessories for machine tools | |
| #7 | Unspecified technologies |
| # | Name | Total Patents |
|---|---|---|
| #1 | Marshall Lewis C | 9 |
| #2 | Hill Charles K | 1 |
| #3 | Case Charles L | 1 |
| #4 | Hall Andrew F | 1 |
| #5 | Anderson James G | 1 |
| #6 | Small Frederick E | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US1549201A | Multiple-part piston ring | |
| US1612139A | Apparatus for making templates | |
| US1443755A | Packing ring for pistons | |
| US1500252A | Piston ring | |
| US1492673A | Piston packing | |
| US1450346A | Process of making resilient split rings | |
| US1418918A | Piston packing | |
| US1361393A | Piston-ring | |
| US1421802A | Piston packing | |
| US1413923A | Piston packing | |
| US1359596A | Piston-ring | |
| US1400560A | Piston-packing | |
| US1360967A | Piston-packing | |
| US1437563A | Packing ring |