Granted Patent
Utility
US 5,154,955 · App. 07/410,481
Fiber-reinforced cement composition
Inventors:
Pierre Delvaux, Normand Lesmerises
Patented Case
View Patent ↗
Granted: Oct 13, 1992
Filed: Sep 21, 1989
Inventors
Pierre Delvaux
Normand Lesmerises
Assignee (at issue)
Ceram SNA 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.