Skip to content

Patent Leaderboard

USPTO Patent Rankings Data through Dec 31, 2025

Search Companies Universities Inventors Cities States Technologies Top Patents Inventor 500

Select ranking year

Home › Single lever hatch cover

Single lever hatch cover

US Patent 4461219 · Granted Jul 24, 1984

Assignee

No assignee recorded.

Inventors

Unknown

View full patent text on Google Patents →

More Patents by These Inventors

Multiple section pier and installation assembly1990

Pneumatic gate for railway hopper cars1985

Data from USPTO via PatentsView — About — Embed & Press Kit — © 2026 Patent Leaderboard

Last updated: Dec 31, 2025 · Updated quarterly