Granted Patent
Utility
US 6,401,504 · App. 09/597,872
Threaded hole locking device
Inventors:
Jay S. Derman, Greg Zeren
Patented Case
View Patent ↗
Granted: Jun 11, 2002
Filed: Jun 20, 2000
Inventors
Jay S. Derman
Greg Zeren
Assignee (at issue)
ACCO BRANDS 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.