Granted Patent
Utility
US 6,231,271 · App. 09/286,169
Apparatus and method for lifting piles
Inventors:
James O. Glass, Sam M. Glass
Patented Case
View Patent ↗
Granted: May 15, 2001
Filed: Apr 5, 1999
Inventors
James O. Glass
Sam M. Glass
Assignee (at issue)
Stab Cat, 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.