Granted Patent
Utility
US 4,235,285 · App. 06/089,022
Self-fastened heat sinks
Inventors:
Philip A. Johnson, Alfred F. McCarthy
Patented Case
View Patent ↗
Granted: Nov 25, 1980
Filed: Oct 29, 1979
Inventors
Philip A. Johnson
Alfred F. McCarthy
Assignee (at issue)
Aavid Engineering, 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.