Inventor · disambiguated record
Daniel B. Steffen
Also filed as: STEFFEN DANIEL B
2 granted patents·124 citations·filing 1997–2000
70Inventor score
Files withHOFFMAN CONTROLS CORP2
Top patents by PatentIndex Score
2 records- 0189US6684944B1Variable speed fan motor control for forced air heating/cooling systemHOFFMAN CONTROLS CORP·Filed 2000·Granted Feb 3, 2004·57 cites·7 claims
- 0283US6070660AVariable speed fan motor control for forced air heating/cooling systemHOFFMAN CONTROLS CORP·Filed 1997·Granted Jun 6, 2000·67 cites·4 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →