Inventor · disambiguated record

Karl H. Welch

Also filed as: WELCH KARL H

1 granted patent·54 citations·filing 1978–1978

48Inventor score
Technology areasE21B
Files withSALEM TOOL CO1

Top patents by PatentIndex Score

1 record

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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →