Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Keeper spring for connecting mining tool to work tool holder

Keeper spring for connecting mining tool to work tool holder

US Patent 4327947 · Granted May 4, 1982

Estimated economic value: $3,182,000 ⓘ

Assignee

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Method and apparatus for affixing a roof bolting plate to a mine roof1984
Resin capsule and method for grouting anchor elements in holes of various length1983
Method and apparatus for mine roof drilling1982
Parallel tube resin capsules1981
Screen for particle separation1981