Inventor · disambiguated record

Hendrik Fedde Van Der Spek

Also filed as: SPEK HENDRIK FEDDE VAN DER · VAN DER SPEK HENDRIK FEDDE

2 granted patents·17 citations·filing 1996–2007

55Inventor score

Technology areasB29C F04D

Files withHOWDEN NETHERLANDS B V1 VENTILATOREN SIROCCO HOWDEN BV1

Top patents by PatentIndex Score

2 records

0145US7771168B2Axial fanHOWDEN NETHERLANDS B V·Filed 2007·Granted Aug 10, 2010·1 cites·17 claims
0245US5683636AMethod of fan blade manufactureVENTILATOREN SIROCCO HOWDEN BV·Filed 1996·Granted Nov 4, 1997·16 cites·9 claims

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