Laser material removal apparatus
Patent 3941973 Issued on March 2, 1976. Estimated Expiration Date: 
March 2, 1993. 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.
March 2, 1993. 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 ReferencesInventorsAssigneeApplicationNo. 483338 filed on 06/26/1974US Classes:219/121.68, Etching or trimming219/121.75, With lens219/121.83, With monitoring385/121Transition between geometric shapesExaminersPrimary: Truhe, J. V.Assistant: Peterson, G. R. Attorney, Agent or FirmAbstractA laser material removal apparatus and method of removing material from a workpiece wherein a laser forms a beam of radiation having a substantially circular cross-sectional configuration, and optical means is provided for compressing portions of the beam so that the resultant focused beam will provide an image of substantially rectangular shape and uniform energy whereby improved control of the size and shape of the area to be removed is obtained. | |
