Granted Patent
Utility
US 4,812,907 · App. 07/140,001
Sync pulse separator system
Inventors:
Roger Hathaway, Gopal K. Srivastava
Patented Case
View Patent ↗
Granted: Mar 14, 1989
Filed: Dec 31, 1987
Inventors
Roger Hathaway
Gopal K. Srivastava
Assignee (at issue)
Zenith Electronics LLC
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.