Birger Bertermann Trademarks
MOUNTSON
Filed: January 11, 2022
Apparatus for recording, transmission or reproduction of sound or images; Hi-Fi apparatus, electronic apparatus for transmitting…
Owned by: Birger Bertermann
Serial Number: 79338711
MOUNTSON
Filed: March 16, 2022
Apparatus for recording, transmission or reproduction of sound or images; Hi-Fi apparatus, electronic apparatus for transmitting…
Owned by: Birger Bertermann
Serial Number: 97314754
PHASE LINEAR
Filed: August 10, 2023
Loudspeaker systems; Loudspeakers; Loudspeakers with built in amplifiers; Loudspeakers, headphones, microphones and CD players…
Owned by: Birger Bertermann
Serial Number: 98126522
