Granted Patent
Utility
US 6,623,208 · App. 09/738,617
Concrete placing and screeding apparatus and method
Inventors:
Philip J. Quenzi, Carl B. Kieranen, Jeffrey Torvinen, Charles Hallstrom, Mark A. Pietila
Patented Case
View Patent ↗
Granted: Sep 23, 2003
Filed: Dec 15, 2000
Inventors
Philip J. Quenzi
Carl B. Kieranen
Jeffrey Torvinen
Charles Hallstrom
Mark A. Pietila
Assignee (at issue)
Delaware Capital Formation, Inc.
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.