Granted Patent
Utility
US 4,435,937 · App. 06/356,126
Concealed fastener support for interlocked channel section panels
Inventor:
Lester W. Stone
Patented Case
View Patent ↗
Granted: Mar 13, 1984
Filed: Mar 8, 1982
Inventor
Lester W. Stone
Assignee (at issue)
Armco Inc.
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.