Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Hair roller device

Hair roller device

US Patent 4210163 · Granted Jul 1, 1980

Estimated economic value: $2,246,000 ⓘ

Assignee

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Intelligent plant development library environment2015
Conflicting expert systems2013
Loop holding mechanism for use in a multi-axial yarn structure forming machine1999
High performance antenna for hand-held and portable equipment1994
Low voltage push-pull amplifier1986