Granted Patent
Utility
US 4,207,771 · App. 05/016,686
Method and apparatus for monitoring cracking using stress wave emission techniques
Inventors:
Mark F. Carlos, Min-Chung Jon, Vito Palazzo
Patented Case
View Patent ↗
Granted: Jun 17, 1980
Filed: Mar 2, 1979
Inventors
Mark F. Carlos
Min-Chung Jon
Vito Palazzo
Assignee (at issue)
Western Electric Company, 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.