Granted Patent
Utility
US 6,237,696 · App. 09/421,241
Ground opener with disc scraper mounting
Inventor:
Dean Mayerle
Patented Case
View Patent ↗
Granted: May 29, 2001
Filed: Oct 20, 1999
Inventor
Dean Mayerle
Assignee (at issue)
Flexi-Coil Ltd.
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.