Patent Leaderboard

USPTO Patent Rankings Data through Dec 31, 2025

Search Companies Inventors Cities States

Home › Locking tube roller

Locking tube roller

US Patent D303892 · Granted Oct 10, 1989

Assignee

No assignee recorded.

Inventors

William Parker (6 patents)

View full patent text on Google Patents →

More Patents by These Inventors

Heat exchanger integrated services2022

Parallel tube inspection system2021

Internal mandrel and method2014

M-I-M' device and fabrication method1992

Spray nozzle body1982

Data from USPTO via PatentsView — © 2026 Patent Leaderboard

Last updated: Dec 31, 2025 · Updated quarterly