| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 14 |
| # | Industry | |
|---|---|---|
| #1 | Civil engineering | |
| #2 | Machines | |
| #3 | Mechanical elements | |
| #4 | Electrical machinery and energy |
| # | Technology | |
|---|---|---|
| #1 | Machines for making railways | |
| #2 | Unspecified technologies | |
| #3 | Nails | |
| #4 | Electric switches |
| # | Name | Total Patents |
|---|---|---|
| #1 | Norwood Harry G | 11 |
| #2 | Hyle Jacob A | 2 |
| #3 | Dickey Arthur R | 1 |
| #4 | Herman Jacob W | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US1804510A | Railway rail anchor | |
| US1773691A | Railway-rail anchor | |
| US1780714A | Railway-rail anchor | |
| US1763438A | Railway-rail anchor | |
| US1765092A | Railway-rail anchor | |
| US1805413A | Spring nut locking device for rail joints | |
| US1805412A | Spring nut locking device for rail joints | |
| US1758848A | Spring nut-locking device for rail joints | |
| US1793745A | Spring nut-locking device for rail joints | |
| US1722108A | Railway-rail anchor | |
| US1722107A | Railway-rail anchor | |
| US1257708A | Railway-reail joint. | |
| US1145141A | Railway-tie. | |
| US766430A | Telegraphic instrument. |