Granted Patent
Utility
US 6,138,420 · App. 09/226,281
Blast-resistant building
Inventor:
Edward R. Fyfe
Patented Case
View Patent ↗
Granted: Oct 31, 2000
Filed: Jan 7, 1999
Inventor
Edward R. Fyfe
Assignee (at issue)
Fyfe Co., LLC
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.