| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 11 |
| # | Industry | |
|---|---|---|
| #1 | Transport | |
| #2 | Machine tools | |
| #3 | Machines | |
| #4 | Materials and metallurgy | |
| #5 | Mechanical elements |
| # | Technology | |
|---|---|---|
| #1 | Making screws | |
| #2 | Unspecified technologies | |
| #3 | Clutches and brakes | |
| #4 | Railway brakes | |
| #5 | Unspecified technologies | |
| #6 | Rail vehicle suspensions | |
| #7 | Railway bodies | |
| #8 | Marine propulsion | |
| #9 | Foundry moulding | |
| #10 | Couplings |
| # | Name | Total Patents |
|---|---|---|
| #1 | Arnold Christianson | 11 |
| #2 | Christian Christianson | 4 |
| Publication | Filing date | Title |
|---|---|---|
| US2976798A | Level operating multiple ram press | |
| US3026105A | Outboard motor stand | |
| US2214718A | Car coupler | |
| US1669862A | Brake structure | |
| US1664915A | Side bearing | |
| US1676426A | Car-door structure | |
| US1639256A | Brake-head support | |
| US1428359A | Sand mold and apparatus for making it | |
| US1399334A | Mill for rolling tapered disks | |
| US1399333A | Mill for rolling tapered disks | |
| US1399335A | Method of forming wheel-disks |