Granted Patent
Utility
US 4,290,145 · App. 06/158,509
Circuit arrangement for compensating temperature-dependent frequency variations of a crystal-controlled oscillator
Inventors:
Manlio Saba, Roberto Szocs
Patented Case
View Patent ↗
Granted: Sep 15, 1981
Filed: Jun 11, 1980
Inventors
Manlio Saba
Roberto Szocs
Assignee (at issue)
Societa Italiana Telecomunicazioni Siemens S.p.A.
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.