| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 12 | |
| #2 | Canada | 4 |
| # | Industry | |
|---|---|---|
| #1 | Transport | |
| #2 | Machine tools | |
| #3 | Machines | |
| #4 | Mechanical elements |
| # | Technology | |
|---|---|---|
| #1 | Railway bodies | |
| #2 | Unspecified technologies | |
| #3 | Cutting | |
| #4 | Punching metal | |
| #5 | Rail vehicle suspensions | |
| #6 | Springs |
| # | Name | Total Patents |
|---|---|---|
| #1 | Summers Edgar Webster | 16 |
| #2 | Summers Hadley Herbert | 1 |
| #3 | Clark Charles H | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US1190480A | Car-truck side frame and journal-box. | |
| US1189636A | Truck side frame and journal-box. | |
| CA131122A | Railway car and truck | |
| US918390A | Hopper-car. | |
| US893279A | Railway-car. | |
| CA105114A | Spring seat and bed | |
| US855821A | Metal-punching machine. | |
| US856110A | Metal-punching machine. | |
| US860266A | Plate-punching machine. | |
| CA103503A | Car | |
| US837751A | Convertible spring seat and bed. | |
| US835167A | Car. | |
| US861552A | Car. | |
| US789392A | Car. | |
| US746602A | Car-bottom. | |
| CA66914A | Railway car |