Granted Patent
Utility
US 4,649,239 · App. 06/784,022
Program timer with variable time delay
Inventor:
John P. Duve
Patented Case
View Patent ↗
Granted: Mar 10, 1987
Filed: Oct 4, 1985
Inventor
John P. Duve
Assignee (at issue)
Eaton 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.