Granted Patent
Utility
US 5,324,914 · App. 07/951,209
Method and apparatus for welding precipitation hardenable materials
Inventors:
Holt A. Murray, Jr., Ian D. Harris, John O. Ratka, William D. Spiegelberg
Patented Case
View Patent ↗
Granted: Jun 28, 1994
Filed: Sep 25, 1992
Inventors
Holt A. Murray, Jr.
Ian D. Harris
John O. Ratka
William D. Spiegelberg
Assignees (at issue)
The Trustees of Princeton University
British Technology Group USA 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.