| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Yugoslavia (Serbia and Montenegro) | 5 | |
| #2 | Poland | 3 | |
| #3 | Austria | 2 | |
| #4 | France | 2 | |
| #5 | Italy | 2 | |
| #6 | Netherlands | 2 | |
| #7 | Australia | 1 | |
| #8 | Brazil | 1 | |
| #9 | Canada | 1 | |
| #10 | German Democratic Republic | 1 | |
| #11 | Denmark | 1 | |
| #12 | Spain | 1 | |
| #13 | United Kingdom | 1 | |
| #14 | Greece | 1 | |
| #15 | Japan | 1 | |
| #16 | Sweden | 1 |
| # | Industry | |
|---|---|---|
| #1 | Environmental technology | |
| #2 | Engines, pumps and turbines |
| # | Technology | |
|---|---|---|
| #1 | Climate change mitigation in wastewater treatment | |
| #2 | Water treatment | |
| #3 | Non-positive-displacement pumps |
| # | Name | Total Patents |
|---|---|---|
| #1 | Dracka O | 6 |
| #2 | Mackrle S | 6 |
| #3 | Mackrle V | 6 |
| #4 | Raska S | 3 |
| #5 | Buradeimiiru Machikurire | 1 |
| #6 | Mackrle Vladimir | 1 |
| #7 | Dracka Oldrich | 1 |
| #8 | Subuatopuruku Machikurire | 1 |
| #9 | Mackrle Svatopluk | 1 |
| #10 | Oredorichi Dorachika | 1 |
| Publication | Filing date | Title |
|---|---|---|
| YU86880A | Electronic time switch | |
| YU86980A | Electronic thermostat | |
| DD159955A3 | Electronic programming device | |
| CA1102934A | Method of transmitting liquid between separated activation compartments for biological purification of water and apparatus for performing the same | |
| YU138678A | Reactor for the continuous biological purification of sewage water,especially suitable for weekend cottages and family houses |