Granted Patent
Utility
US 4,495,255 · App. 06/202,290
Laser surface alloying
Inventors:
Clifton Walk Draper, John M. Poate
Patented Case
View Patent ↗
Granted: Jan 22, 1985
Filed: Oct 30, 1980
Inventors
Clifton Walk Draper
John M. Poate
Assignee (at issue)
AT&T Technologies Incorporated
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.