Inventor · disambiguated record
Fred J. Pittard
Also filed as: PITTARD FRED J
3 granted patents·358 citations·filing 1990–1990
79Inventor score
Technology areasE21B
Files withSLIMDRIL INTERNATIONAL INC3
Top patents by PatentIndex Score
3 records- 0191US5036921AUnderreamer with sequentially expandable cutter bladesSLIMDRIL INTERNATIONAL INC·Filed 1990·Granted Aug 6, 1991·214 cites·34 claims
- 0279US5090480AUnderreamer with simultaneously expandable cutter blades and methodSLIMDRIL INTERNATIONAL INC·Filed 1990·Granted Feb 25, 1992·86 cites·25 claims
- 0370US5060738AThree-blade underreamerSLIMDRIL INTERNATIONAL INC·Filed 1990·Granted Oct 29, 1991·58 cites·13 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →