Granted Patent
Utility
US 5,138,764 · App. 07/687,158
Method for assembling heat exchanger plate pairs by snap fit
Inventors:
Michael A. Breda, George K. Snyder
Patented Case
View Patent ↗
Granted: Aug 18, 1992
Filed: Apr 18, 1991
Inventors
Michael A. Breda
George K. Snyder
Assignee (at issue)
General Motors LLC
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.