Granted Patent
Utility
US 6,000,883 · App. 09/033,783
Sheet piling extrusion
Inventors:
John E. Irvine, John J. Yeosock
Patented Case
View Patent ↗
Granted: Dec 14, 1999
Filed: Mar 3, 1998
Inventors
John E. Irvine
John J. Yeosock
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.