Granted Patent
Utility
US 5,111,577 · App. 07/638,460
Pad including heat sink and thermal insulation areas
Inventors:
William M. Sheridan, Raymond E. Ragland
Patented Case
View Patent ↗
Granted: May 12, 1992
Filed: Jan 8, 1991
Inventors
William M. Sheridan
Raymond E. Ragland
Assignee (at issue)
ATD Corporation
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.