Granted Patent
Utility
US 5,513,974 · App. 08/224,558
Manifold assembly with atmospheric vent
Inventors:
John Wise, Larry L. Martin
Patented Case
View Patent ↗
Granted: May 7, 1996
Filed: Apr 7, 1994
Inventors
John Wise
Larry L. Martin
Assignee (at issue)
Advanced Drainage Systems, 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.