Patent Leaderboard

USPTO Patent Rankings Data through Dec 31, 2025

Search Companies Inventors Cities States

Home › Typewriter

Typewriter

US Patent D281253 · Granted Nov 5, 1985

Assignee

Scm Consultants

Inventors

Cornelius W. Christie (4 patents)

View full patent text on Google Patents →

More Patents by These Inventors

Ribbon cartridge1982

Ribbon cartridge1982

Data from USPTO via PatentsView — © 2026 Patent Leaderboard

Last updated: Dec 31, 2025 · Updated quarterly