Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Double worm system

Double worm system

US Patent 6139297 · Granted Oct 31, 2000

Assignee

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Rotary piston machine for compressible media2004
Twin screw rotors and displacement machines containing the same2004
Twin screw rotors for installation in displacement machines for compressible med2002
Displacement machine having a ceramic rolling bearing2002
Screw rotor set2000
Twin feed screw2000