Granted Patent
Utility
US 6,777,641 · App. 10/162,321
Method and apparatus for laser piercing and cutting metal sheet and plate
Inventors:
Ira E. Cole, III, William L. Long
Patented Case
View Patent ↗
Granted: Aug 17, 2004
Filed: Jun 4, 2002
Inventors
Ira E. Cole, III
William L. Long
Assignee (at issue)
W.A. Whitney 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.