Granted Patent
Utility
US 5,975,482 · App. 08/959,039
Concrete form having adjustable curvature
Inventors:
Edward Wu, James J. Johnson
Patented Case
View Patent ↗
Granted: Nov 2, 1999
Filed: Oct 28, 1997
Inventors
Edward Wu
James J. Johnson
Assignee (at issue)
Willian Holding 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.