Granted Patent
Utility
US 6,575,060 · App. 10/255,047
Reversible ratchet wrench
Inventors:
Yi Chuan Tseng, Wan-Chuan Lee
Patented Case
View Patent ↗
Granted: Jun 10, 2003
Filed: Sep 24, 2002
Inventors
Yi Chuan Tseng
Wan-Chuan Lee
Assignee (at issue)
AWI Acquisition Company
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.