Granted Patent
Utility
US 5,001,997 · App. 07/496,980
Sewing mechanism for quilting machine
Inventor:
Ching-Wen Wang
Patented Case
View Patent ↗
Granted: Mar 26, 1991
Filed: Mar 21, 1990
Inventor
Ching-Wen Wang
Assignee (at issue)
Kennoth G. Gammill
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.