Johannes Marra

3 Patents

• US116723752023

  Coffee Brewing

  KONINKLIJKE PHILIPS N.V.

  0 cites
• US116179792023

  Device and Method for Determining the Pollution Status of a Particle Filter in an Air-cleaning Device

  KONINKLIJKE PHILIPS N.V.

  0 cites
• US115556262023

  Ventilation Unit, System and Method

  KONINKLIJKE PHILIPS N.V.

  0 cites