Granted Patent
Utility
US 6,502,867 · App. 09/977,769
Flanged pipe fitting
Inventors:
William W. Holmes, IV, Daniel A. Copeland
Patented Case
View Patent ↗
Granted: Jan 7, 2003
Filed: Oct 15, 2001
Inventors
William W. Holmes, IV
Daniel A. Copeland
Assignee (at issue)
United States Pipe and Foundry Company, LLC
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.