| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Austria | 2 | |
| #2 | Spain | 2 | |
| #3 | United Kingdom | 2 | |
| #4 | United States | 2 | |
| #5 | Switzerland | 1 | |
| #6 | Denmark | 1 | |
| #7 | France | 1 |
| # | Industry | |
|---|---|---|
| #1 | Electrical machinery and energy |
| # | Technology | |
|---|---|---|
| #1 | Circuits for supplying electric power | |
| #2 | Dynamo-electric machines | |
| #3 | Capacitors and switching devices |
| # | Name | Total Patents |
|---|---|---|
| #1 | Buettner Max | 8 |
| #2 | Max Buettner | 1 |
| Publication | Filing date | Title |
|---|---|---|
| GB190417650A | An Improved Electrolytic Rectifier | |
| US809770A | Asymmetric cell. | |
| US734298A | Electric illumination for railroad-cars. | |
| GB190208121A | Improvements in or relating to Electric Lighting of Railway or other Vehicles. |