Granted Patent
Utility
US 6,138,388 · App. 09/510,048
Plug system for a snowplow
Inventors:
James A. Kost, Tim Howell
Patented Case
View Patent ↗
Granted: Oct 31, 2000
Filed: Feb 22, 2000
Inventors
James A. Kost
Tim Howell
Assignee (at issue)
Louis Berkman 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.