FRACTIONAL AND HIGHER LOBED CO-ROTATING TWIN-SCREW ELEMENTS
Patent number 210270
Application number 670/MAS/1999
Journal date 2007-12-14
Patentee
DR. BABU PADMANABHAN
Application date
23 June 1999
Abstract publication date
9 February 2007
Patent Office
CHENNAI
View application 670/MAS/1999