| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 24 | |
| #2 | Canada | 13 |
| # | Industry | |
|---|---|---|
| #1 | Transport | |
| #2 | Civil engineering | |
| #3 | Machine tools | |
| #4 | Machines |
| # | Technology | |
|---|---|---|
| #1 | Guiding railway traffic | |
| #2 | Machines for making railways | |
| #3 | Making forged metal products | |
| #4 | Railway equipment | |
| #5 | Unspecified technologies |
| # | Name | Total Patents |
|---|---|---|
| #1 | Eastburn Samuel L | 10 |
| #2 | Strong James B | 10 |
| #3 | Paul Hoffman | 6 |
| #4 | Hoffman Paul | 4 |
| #5 | Perdue Whittier | 4 |
| #6 | Whittier Perdue | 4 |
| #7 | Cooper George M | 4 |
| #8 | William Bender | 3 |
| #9 | Heidenthal Warren C | 2 |
| #10 | Bender William | 2 |
| Publication | Filing date | Title |
|---|---|---|
| US2067598A | Expansion rail joint | |
| US2054543A | Switch stand | |
| US2099559A | Railway switch | |
| US2003398A | Railroad cross-over | |
| US2059235A | Rail lubricator | |
| US2036198A | Spring frog | |
| US2041382A | Safety connecting rod for switch stands | |
| US1964721A | Switch stand | |
| US2036200A | Adjustable rail brace | |
| US1967875A | Switch stand | |
| US2036199A | Adjustable rail brace | |
| US1862547A | Frog | |
| US1793976A | Rail switch | |
| US1834403A | Lamp tip | |
| US1798767A | Switch stand | |
| US1783283A | Switch stand | |
| US1857582A | Method of making forged compromise bars | |
| US1688107A | Compromise angle bar | |
| US1639697A | Safety locking device | |
| US1628882A | Switch-point guard |