Granted Patent
Utility
US 4,852,044 · App. 07/236,348
Programmable data security circuit for programmable logic device
Inventors:
John E. Turner, Jerome E. Liebler
Patented Case
View Patent ↗
Granted: Jul 25, 1989
Filed: Aug 22, 1988
Inventors
John E. Turner
Jerome E. Liebler
Assignee (at issue)
Lattice Semiconductor 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.