Granted Patent
Utility
US 5,221,847 · App. 07/905,060
Break-before-make control for form C solid-state relays with current limiter bypass
Inventor:
Craig B. Ziemer
Patented Case
View Patent ↗
Granted: Jun 22, 1993
Filed: Jun 26, 1992
Inventor
Craig B. Ziemer
Assignee (at issue)
AT&T Bell Laboratories
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.