Granted Patent
Utility
US 5,831,212 · App. 08/489,605
Electrical junction box for a poured concrete floor
Inventors:
James H. Whitehead, Donald E. Smith
Patented Case
View Patent ↗
Granted: Nov 3, 1998
Filed: Jun 12, 1995
Inventors
James H. Whitehead
Donald E. Smith
Assignee (at issue)
Thomas & Betts, LLC
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.