Granted Patent
Utility
US 5,938,056 · App. 08/808,969
Articulated hinged closure
Inventor:
Xiaoli Ma
Patented Case
View Patent ↗
Granted: Aug 17, 1999
Filed: Feb 19, 1997
Inventor
Xiaoli Ma
Assignee (at issue)
Crown Cork & Seal Technologies Corporation
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.