Granted Patent
Utility
US 6,423,897 · App. 09/626,478
Electrical utility box
Inventors:
Mark A. Roesch, David A. Maccarone
Patented Case
View Patent ↗
Granted: Jul 23, 2002
Filed: Jul 26, 2000
Inventors
Mark A. Roesch
David A. Maccarone
Assignee (at issue)
The Lamson & Sessions Co.
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.