Granted Patent
Utility
US 6,808,667 · App. 10/288,715
Form liner method
Inventors:
Peter A. Nasvik, Paul C. Nasvik
Patented Case
View Patent ↗
Granted: Oct 26, 2004
Filed: Nov 5, 2002
Inventors
Peter A. Nasvik
Paul C. Nasvik
Assignee (at issue)
Concrete Design Specialties, 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.