Inventor

STEPHAN SARA

US3 patents

Patents

3 patents

US8439038B2May 14, 2013

Collapse resistant respirator

STEINDORF ERIC21 citations88

US8267088B2Sep 18, 2012

Collapse resistant respirator

STEINDORF ERIC14 citations88

US8113201B2Feb 14, 2012

Collapse resistant respirator

STEINDORF ERIC6 citations79