Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Handwheel clutch for sewing machines

Handwheel clutch for sewing machines

US Patent 4434880 · Granted Mar 6, 1984

Estimated economic value: $509,000 ⓘ

Assignee

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Convertible bed for a sewing machine1983
Combination handwheel and handwheel clutch for sewing machines1983
Foot controller1981
Elastomeric molded strain relief1981
Automatic bobbin winding system1980