Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Mine roof anchor having adjustable resin retaining washer and expansion shell assembly with friction reducing means

Mine roof anchor having adjustable resin retaining washer and expansion shell assembly with friction reducing means

US Patent 5082399 · Granted Jan 21, 1992

Assignee

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Pumpable resin system2022
Adjustable lattice girder2022
Mine bolt bending system2022
Pumpable two component resin2021
Corrosion resistant yieldable bolt2021
Pumpable resin system2020
Pumpable two component resin2019
Slotted tubular anchor2019
Pumpable resin system2019
Rib strap2018
Yieldable prop with yieldable insert2018
Impact resistant lagging, method for designing impact resistant lagging, and app2016