Inventor

BURAL DAVID A

US3 patents

Patents

3 patents

US9821953B2Nov 21, 2017

Apparatus for sealing a vacuum tank door

CHARLES MACHINE WORKS23 citations91

US10207863B2Feb 19, 2019

Apparatus for sealing a vacuum tank door

CHARLES MACHINE WORKS4 citations70

US10844574B2Nov 24, 2020

Mobile vacuum system

CHARLES MACHINE WORKS4 citations68