| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Denmark | 10 | |
| #2 | Switzerland | 5 | |
| #3 | United Kingdom | 3 | |
| #4 | Canada | 2 |
| # | Industry | |
|---|---|---|
| #1 | Electrical machinery and energy |
| # | Technology | |
|---|---|---|
| #1 | AC and DC conversion devices | |
| #2 | Dynamo-electric machines |
| # | Name | Total Patents |
|---|---|---|
| #1 | Hartmann Julius Frederik Georg | 18 |
| #2 | Georg Poul Dr Hartmann Julius | 1 |
| #3 | Techn Hartmann Julius Frederik | 1 |
| Publication | Filing date | Title |
|---|---|---|
| GB130936A | Improvements in or relating to Rectifiers for Alternating Electric Currents. | |
| GB126947A | Improvements in or relating to Apparatus for Producing a Continuous Electrically Conducting Liquid Jet. | |
| GB102977A | Improvements in Apparatus for Transforming, and especially for Rectifying, Alternating or Polyphase Currents. | |
| CA255881A | Electrode for jet-wave commutators and interruptors | |
| CA255882A | Electric jet-wave commutator and interruptor |