Patent Leaderboard

USPTO Patent Rankings Data through Dec 31, 2025

Search Companies Inventors Cities States

Home › Automatic firearm

Automatic firearm

US Patent 4889032 · Granted Dec 26, 1989

Assignee

Unknown

Inventors

William J. Major (5 patents)

View full patent text on Google Patents →

More Patents by These Inventors

Counterweight system2009

Book spine mounted book light2007

Automatic firearm1991

Automatic firearm1990

Data from USPTO via PatentsView — © 2026 Patent Leaderboard

Last updated: Dec 31, 2025 · Updated quarterly