Inventor · disambiguated record

Kalle Helenius

Also filed as: HELENIUS KALLE

1 granted patent·8 citations·filing 2009–2009

30Inventor score

Technology areasF24F

Files withHELENIUS KALLE1

Top patents by PatentIndex Score

1 record

0165US8272475B2Sound attenuator for low frequencies, method for manufacturing sound attenuator for low frequencies and system for attenuating low frequencies for example in air-conditioning ducts of paper millsHELENIUS KALLE·Filed 2009·Granted Sep 25, 2012·8 cites·23 claims

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