Granted Patent
Utility
US 5,562,317 · App. 08/406,496
Inner handle assembly of cylinder lock
Inventors:
Ching-Chuan Kuo, Ming-Shyang Chiou, Cheng-Wen Lai
Patented Case
View Patent ↗
Granted: Oct 8, 1996
Filed: Mar 20, 1995
Inventors
Ching-Chuan Kuo
Ming-Shyang Chiou
Cheng-Wen Lai
Assignee (at issue)
TONG LUNG METAL INDUSTRY CO., LTD.
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.