Assignee
BERGDAHL KNUT
6 granted patents·75 citations·filing 1974–1981
Top patents by PatentIndex Score
6 records- 0177US3980129AHeat exchange in ventilation installationBERGDAHL KNUT·Filed 1974·Granted Sep 14, 1976·30 cites·10 claims
- 0257US4219307AArrangement in axial fans, compressors, turbines, pumps or the likeBERGDAHL KNUT·Filed 1978·Granted Aug 26, 1980·15 cites·13 claims
- 0354US4130404AMethod and device for cleaning fluid filtersBERGDAHL KNUT·Filed 1977·Granted Dec 19, 1978·14 cites·3 claims
- 0446US4294165AArrangement to counteract or prevent spreading of fire or smokeBERGDAHL KNUT·Filed 1979·Granted Oct 13, 1981·9 cites·5 claims
- 0534US4109705AHeat exchange in ventilation installationBERGDAHL KNUT·Filed 1976·Granted Aug 29, 1978·5 cites·7 claims
- 0630US4412477AArrangement to counteract or prevent spreading of fire or smokeBERGDAHL KNUT·Filed 1981·Granted Nov 1, 1983·2 cites·4 claims
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