Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Rotary rock bit with improved thrust flange

Rotary rock bit with improved thrust flange

US Patent 4330158 · Granted May 18, 1982

Estimated economic value: $6,328,000 ⓘ

Assignee

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Rock bit lubrication system1986
Cutter actuated rock bit lubrication system1980