Inventor

NORTON KELLY

US3 patents

Patents

3 patents

US11388571B2Jul 12, 2022

Method and apparatus for protecting a miner

BERTOSH MICHAEL W2 citations68

US9712949B2Jul 18, 2017

Method and apparatus for protecting a miner

BERTOSH MICHAEL W2 citations68

US11778441B2Oct 3, 2023

Method and apparatus for protecting a miner

BERTOSH MICHAEL W0 citations57