Patent 5214630 Issued on May 25, 1993. Estimated Expiration Date: January 4, 2011. 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.
A carriage which is provided with a light beam focusing lens for focusing the light beam on an optical disc is made of light transmissible material, a light reflection part is formed at one end part in one body of the carriage, and a carriage holding mechanism is disposed on both sides in one body thereof so as to be movable in the radial direction of the optical disc, the light beam is applied to the carriage at the other end part thereof.
January 4, 2011. 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.
