Inventor · disambiguated record
David J. Markham
Also filed as: MARKHAM DAVID J
3 granted patents·75 citations·filing 1997–1999
73Inventor score
Files withRAMCO CONSTRUCTION TOOLS INC2
Top patents by PatentIndex Score
3 records- 0166US6257673B1Percussion tool for boom mounted hammersRAMCO CONSTRUCTION TOOLS INC·Filed 1999·Granted Jul 10, 2001·34 cites·13 claims
- 0265US5873168AShear knife with blade insertFiled 1997·Granted Feb 23, 1999·33 cites·8 claims
- 0330US5884978AHammer tool for boom mountable power hammerRAMCO CONSTRUCTION TOOLS INC·Filed 1997·Granted Mar 23, 1999·8 cites·14 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →