Granted Patent
Utility
US 4,352,386 · App. 06/108,343
Automatic cord lock device
Inventors:
John T. Butler, L. George Valle, Donald E. Wall
Patented Case
View Patent ↗
Granted: Oct 5, 1982
Filed: Dec 31, 1979
Inventors
John T. Butler
L. George Valle
Donald E. Wall
Assignee (at issue)
Liken Home Furnishings
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.