Inventor · disambiguated record
Charles E. Dull
Also filed as: DULL CHARLES · DULL CHARLES E
5 granted patents·195 citations·filing 1991–1997
84Inventor score
Top patents by PatentIndex Score
5 records- 0191US5172562ARefrigerant recovery, purification and recharging system and methodSPX CORP·Filed 1991·Granted Dec 22, 1992·93 cites·11 claims
- 0272US5158747AApparatus for identifying and distinguishing different refrigerantsSPX CORP·Filed 1991·Granted Oct 27, 1992·37 cites·26 claims
- 0366US5906106ARefrigerant air analyzer and purge systemSPX CORP ROBINAIR DIVISION·Filed 1997·Granted May 25, 1999·32 cites·50 claims
- 0458US5693346AAutomatic molded hardboard unnesting systemMASONITE CORP·Filed 1995·Granted Dec 2, 1997·13 cites·17 claims
- 0552US5209077ARefrigerant recovery systemSPX CORP·Filed 1991·Granted May 11, 1993·20 cites·16 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →