Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Mechanical hand for a door-opener

Mechanical hand for a door-opener

US Patent 4423999 · Granted Jan 3, 1984

Estimated economic value: $9,008,000 ⓘ

Assignee

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Quick disconnect device1989
Door-opener apparatus1982