Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Two-prong rotary bit, especially for use with roof drills, and insert therefor

Two-prong rotary bit, especially for use with roof drills, and insert therefor

US Patent 4550791 · Granted Nov 5, 1985

Estimated economic value: $1,288,000 ⓘ

Assignee

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Method of determining cutting forces, and a calculator operating in accordance w2004
Indexable insert with a V-shaped chip breaker2001
Tamping blade with improved inserts1990
Grader blade with tiered inserts on leading edge1988
Rotary percussion drill bit1988
Grader blade with casting/insert assembly on leading edge1987