Patent Leaderboard

USPTO Patent Rankings Data through Dec 31, 2025

Search Companies Inventors Cities States

Home › Railroad car wheel gauge

Railroad car wheel gauge

US Patent 4386469 · Granted Jun 7, 1983

Assignee

Abex

Inventors

Irving Lapsker (3 patents)

View full patent text on Google Patents →

More Patents by These Inventors

Athletic projectile and target training device1996

Segmented disc brake pad1985

Data from USPTO via PatentsView — © 2026 Patent Leaderboard

Last updated: Dec 31, 2025 · Updated quarterly