| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United Kingdom | 3 | |
| #2 | United States | 3 | |
| #3 | Austria | 2 | |
| #4 | Denmark | 2 | |
| #5 | Spain | 2 | |
| #6 | Switzerland | 1 | |
| #7 | France | 1 |
| # | Industry | |
|---|---|---|
| #1 | Transport | |
| #2 | Civil engineering | |
| #3 | Machines |
| # | Technology | |
|---|---|---|
| #1 | Couplings | |
| #2 | Wing fittings | |
| #3 | Bolts for doors or windows | |
| #4 | Unspecified technologies |
| # | Name | Total Patents |
|---|---|---|
| #1 | Koehn Franz | 11 |
| #2 | Franz Koehn | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US722114A | Lateral coupling for railroad-cars. | |
| GB190214304A | Automatic Coupling for Railroad Vehicles. | |
| US700782A | Side coupling for railroad-cars. | |
| GB190201660A | A Side-action Coupling for Railway Vehicles. | |
| US628819A | Barrel-closure. | |
| GB189824665A | New or Improved Lid or Cover for Barrels for the Transport of Fish. |