Granted Patent
Utility
US 4,657,407 · App. 06/651,573
Clock construction and method of making the same
Inventor:
Jay L. Lewis
Patented Case
View Patent ↗
Granted: Apr 14, 1987
Filed: Sep 17, 1984
Inventor
Jay L. Lewis
Assignee (at issue)
ROBERTSHAW CONTROLS PRIVATE LIMITED
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.