Granted Patent
Utility
US 4,306,689 · App. 06/123,985
Device for suppressing deviations in the output voltage of a pressure transducer in magnetic tape recorders caused by temperature fluctuations
Inventors:
Ernst Kegler, Franz Meyer
Patented Case
View Patent ↗
Granted: Dec 22, 1981
Filed: Feb 25, 1980
Inventors
Ernst Kegler
Franz Meyer
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.