D. J. Helfritch

Electromagnetic interference shielding by cold spray particle deposition

D. J. Helfritch, 2007 .

An evaluation of a pre-charging pulse-jet filter for small combustor particulate control. Project quarterly report, October 1--November 30, 1989

D. J. Helfritch, 1989 .

Coal fired boiler flyash control by fabric filter dust collectors

D. J. Helfritch, G. H. Beach, 1976 .

Mainstreaming cold spray – push for applications

D. J. Helfritch, V. K. Champagne, V. Champagne, 2014 .

Flue gas mercury control by means of corona discharge

D. J. Helfritch, P. L. Feldman, 1999 .