File folder, box and panel designed with pre-perforated holes, grooves and slots
Patent 6439611 Issued on August 27, 2002. Estimated Expiration Date: 
October 24, 2020. 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.
October 24, 2020. 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 1895174 Card collection carrying case with three-ring binder Device for supporting of file wrappers Patent #: 5713551 AbstractA novel file folder, box and panel designed with pre-perforated holes, grooves and slots where the file folder at least comprises two pieces of panel, on which a plurality of holes, grooves, slots, and border indentations are pre-perforated. The file folder panel has at least a flap on its periphery. The pre-perforated holes, grooves and slots are fit for installing a variety of file clips. The pre-perforated holes and slots also permit fixing and winding the elastic trap. The flap, after being erected up in place, allows the file clip and elastic trap to band together. The invention provides a separate design of file folder panels and file clips to form varying combinations, functions and economical benefits as the end-user desires. | |
