| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 22 | |
| #2 | Canada | 1 |
| # | Industry | |
|---|---|---|
| #1 | Mechanical elements | |
| #2 | Machines | |
| #3 | Machine tools | |
| #4 | Measurement | |
| #5 | Basic materials chemistry |
| # | Name | Total Patents |
|---|---|---|
| #1 | Morton Allen W | 16 |
| #2 | Koether Emil A | 2 |
| #3 | Justice William N | 2 |
| #4 | Lee Browne Arthur | 1 |
| #5 | Preston Petre Alexander | 1 |
| #6 | Edward Stead | 1 |
| #7 | Petre Alexander P | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US1956328A | Piston expander | |
| US1930857A | Method of making piston ring joints | |
| US1894000A | Piston ring | |
| US1881652A | Method of making alpha ring joint | |
| US1862059A | Piston ring | |
| US1851108A | Piston packing | |
| US1881849A | Piston ring | |
| US1861716A | Piston ring | |
| US1871820A | Packing | |
| US1801688A | Packing | |
| US1879988A | Rod packing | |
| US1830841A | Piston ring | |
| US1852529A | Apparatus for closing and clamping split rings about alpha mandrel | |
| US1756905A | Piston ring | |
| US1879855A | Piston rod packing | |
| US1749832A | Piston ring | |
| US1857254A | Method of producing rings | |
| US1723432A | Piston ring | |
| US1749831A | Piston ring | |
| US1691120A | Method of grinding piston rings |