Granted Patent
Utility
US 6,779,855 · App. 10/375,774
Interlock mechanism for lateral file cabinets
Inventor:
Keith A. Hoffman
Patented Case
View Patent ↗
Granted: Aug 24, 2004
Filed: Feb 27, 2003
Inventor
Keith A. Hoffman
Assignee (at issue)
KNAPE & VOGT MANUFACTURING 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.