Inventor · disambiguated record
David W. Hegdahl
Also filed as: HEGDAHL DAVID W · HEGDAHL DAVID WAYNE
3 granted patents·99 citations·filing 1994–2002
75Inventor score
Top patents by PatentIndex Score
3 records- 0188US7001475B2Film structures and methods of making film structures3M INNOVATIVE PROPERTIES CO·Filed 2001·Granted Feb 21, 2006·29 cites·21 claims
- 0283US6686026B2Micro-channeled protective film3M INNOVATIVE PROPERTIES CO·Filed 2002·Granted Feb 3, 2004·22 cites·22 claims
- 0379US5418339APneumatic tool having noise reducing muffling structureMINNESOTA MINING & MFG·Filed 1994·Granted May 23, 1995·48 cites·8 claims
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