Granted Patent
Utility
US 6,138,927 · App. 09/259,329
Dual mode spreader
Inventors:
Kenneth J. Spear, Steven F. Brooker
Patented Case
View Patent ↗
Granted: Oct 31, 2000
Filed: Mar 1, 1999
Inventors
Kenneth J. Spear
Steven F. Brooker
Assignee (at issue)
O. Ames Co.
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.