Granted Patent
Utility
US 4,976,293 · App. 07/472,847
Built up seam for papermakers fabric
Inventor:
W. Daniel Aldrich
Patented Case
View Patent ↗
Granted: Dec 11, 1990
Filed: Jan 31, 1990
Inventor
W. Daniel Aldrich
Assignee (at issue)
Niagara Lockport Industries 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.