Granted Patent
Utility
US 4,914,404 · App. 07/358,978
Method for synchronization of a signal frequency to interference-prone reference signal frequencies
Inventor:
Wolfram Ernst
Patented Case
View Patent ↗
Granted: Apr 3, 1990
Filed: May 26, 1989
Inventor
Wolfram Ernst
Assignee (at issue)
Siemens Aktiengesellschaft
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.