Inventor
LANGENFELD MICHAEL D
US9 patents
⚠️ This page may combine multiple inventors who share the name “LANGENFELD MICHAEL D”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
VERMEER MFG CO
8 patentsUS10851588B2Dec 1, 2020
Dual rod directional drilling system
VERMEER MFG CO6 citations82
US10711520B2Jul 14, 2020
Dual rod directional drilling system
VERMEER MFG CO7 citations79
US11808151B2Nov 7, 2023
Dual rod directional drilling system
VERMEER MFG CO1 citations71
US10961779B2Mar 30, 2021
Dual rod directional drilling system
VERMEER MFG CO1 citations71
US9605491B2Mar 28, 2017
Tapered thread configuration with improved durability
VERMEER MFG CO2 citations71
US11105156B2Aug 31, 2021
Pullback system for drilling tool
VERMEER MFG CO3 citations70
US9016366B2Apr 28, 2015
Tapered thread configuration with improved durability
VERMEER MFG CO1 citations61
US10227832B2Mar 12, 2019
Tapered thread configuration with improved durability
VERMEER MFG CO0 citations51