Patent D542970 Issued on May 15, 2007. Estimated Expiration Date: May 15, 2021. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
Patent References
Hair iron Patent #: D489482 Issued on: 05/04/2004 Inventor: Cho