| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 49 | |
| #2 | Canada | 3 | |
| #3 | France | 1 |
| # | Industry | |
|---|---|---|
| #1 | Transport | |
| #2 | Materials and metallurgy | |
| #3 | Machines | |
| #4 | Mechanical elements | |
| #5 | Civil engineering | |
| #6 | Machine tools | |
| #7 | Thermal processes |
| # | Technology | |
|---|---|---|
| #1 | Railway bodies | |
| #2 | Casting metal | |
| #3 | Unspecified technologies | |
| #4 | Iron and steel production | |
| #5 | Hydraulic engineering | |
| #6 | Unspecified technologies | |
| #7 | Rail vehicle suspensions | |
| #8 | Nails | |
| #9 | Heat-exchanger without contact | |
| #10 | Punching metal |
| # | Name | Total Patents |
|---|---|---|
| #1 | Astrom Carl P | 40 |
| #2 | Treadwell Munson H | 4 |
| #3 | Olson John H | 2 |
| #4 | Steven Frank R | 2 |
| #5 | Sirnit John A | 2 |
| #6 | Sayre Paul L | 1 |
| #7 | Hjalmar Olson Johan | 1 |
| #8 | Ketchum Samuel | 1 |
| #9 | Howard John H | 1 |
| #10 | Arvid Nordin | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US2141694A | Conveying apparatus for hot materials | |
| US1870220A | Hot metal car | |
| US1785292A | Hot-metal car | |
| US1812314A | Tandem hot metal car | |
| US1871834A | Quick opening and closing door for retorts and the like | |
| US1819788A | Braking mechanism | |
| US1616074A | Hot-metal container | |
| US1613153A | Dumping car | |
| US1538499A | Dumping car | |
| US1594374A | Penstock gate | |
| US1524497A | Dumping car | |
| US1529966A | Penstock gate | |
| US1584711A | Metal structure | |
| US1610074A | Universal joint for driving dump-car bodies | |
| US1526432A | Locking device for dumping-car bodies | |
| US1610075A | Driving connection for dump-car bodies | |
| US1492344A | Penstock gate | |
| US1442187A | Dumping car | |
| US1442151A | Dump-car-locking device | |
| US1440576A | Metal structure and method of securing parts |