Granted Patent
Utility
US 4,370,578 · App. 06/274,850
Coil/core assembly with interference fit
Inventor:
Wilhelm Tilse
Patented Case
View Patent ↗
Granted: Jan 25, 1983
Filed: Jun 18, 1981
Inventor
Wilhelm Tilse
Assignee (at issue)
Timex 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.