Inventor
PETERMAN THOMAS HAROLD
US4 patents
Patents
4 patentsUS7222716B2May 29, 2007
Retractable transfer device metering apparatus and methods
DOUGLAS MACHINE INC19 citations91
US6843360B2Jan 18, 2005
Retractable transfer device metering apparatus and methods
DOUGLAS MACHINE INC39 citations91
US7533768B2May 19, 2009
Retractable transfer device metering apparatus and methods
DOUGLAS MACHINE INC27 citations89
US8011495B2Sep 6, 2011
Transfer device metering apparatus and methods
DOUGLAS MACHINE INC16 citations78