Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Winch mechanism

Winch mechanism

US Patent 4223871 · Granted Sep 23, 1980

Assignee

No assignee recorded.

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Depth enhancing screen2011
Speed control system for a pipeline inspection vehicle1984
Magnetic pipeline inspection vehicle with metallic foil and bristle contacts sup1984
Speed control system for a pipeline inspection vehicle1983
Magnet assemblies with plural metallic foil contact members for pipeline inspect1982
Winch mechanism1980