Two point punch
Patent 5029392 Issued on July 9, 1991. Estimated Expiration Date: 
August 8, 2010. 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.
August 8, 2010. 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 267751 1721007 1754568 1817223 2214701 2221904 2237069 3728927 Slug-splitting punch Spatial correction device for an image analyzer InventorsAssigneeApplicationNo. 564125 filed on 08/08/1990US Classes:30/360, With portion positioned in work aperture30/361, Work-mounted83/689Progressive cuttingExaminersPrimary: Phan, Hien H.Attorney, Agent or FirmForeign Patent References
International ClassB26F 001/00AbstractThis is concerned with a punch sometimes referred to as a draw punch which is constructed and arranged for enlarging holes in a large variety of materials, such as sheet metal, for example in junction boxes and the like where large tools cannot be used. More specifically this is concerned with a punch of the above type which is constructed and arranged to cut the metal or slug into two pieces so that they may be removed from the die without the assistance of a prying tool. | |
