Granted Patent
Utility
US 5,090,344 · App. 07/729,074
Presser of a sewing machine
Inventor:
Shui-Nu Wang
Patented Case
View Patent ↗
Granted: Feb 25, 1992
Filed: Jul 15, 1991
Inventor
Shui-Nu Wang
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.