Granted Patent
Utility
US 6,302,445 · App. 09/432,037
Irrigation pipe system
Inventors:
Adolf Kugele, LaVern Schroeder
Patented Case
View Patent ↗
Granted: Oct 16, 2001
Filed: Nov 1, 1999
Inventors
Adolf Kugele
LaVern Schroeder
Assignee (at issue)
CERTAINTEED 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.