Granted Patent
Utility
US 5,507,310 · App. 08/421,954
System of plumbing for recreational vehicles
Inventors:
David L. Sordello, Carl A. Engstrom
Patented Case
View Patent ↗
Granted: Apr 16, 1996
Filed: Apr 14, 1995
Inventors
David L. Sordello
Carl A. Engstrom
Assignee (at issue)
Watts Investment Company
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.