Granted Patent
Utility
US 5,568,124 · App. 08/064,680
Method to detect penetration of a surface and apparatus implementing same
Inventors:
Richard J. Joyce, Allan R. Kramer
Patented Case
View Patent ↗
Granted: Oct 22, 1996
Filed: May 20, 1993
Inventors
Richard J. Joyce
Allan R. Kramer
Assignee (at issue)
Hughes Aircraft 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.