Robuta

https://www.epo.org/fr/boards-of-appeal/decisions/t971204eu1 T 1204/97 (Air filter/DONALDSON) du 11.04.2003 97 air filter donaldson 11 04 1204 du https://www.epo.org/en/boards-of-appeal/decisions/t130986eu1 T 0986/13 (Fuel cell filter/Donaldson) of 17.02.2016 13 fuel filter donaldson 17 02 cell https://www.epo.org/de/boards-of-appeal/decisions/t111558eu1 T 1558/11 (FILTER EFFICIENCY/DONALDSON) vom 27.05.2014 27 05 1558 11 filter efficiency