IP Library Granted Patent US 4,980,657
Granted Patent Utility
US 4,980,657 · App. 07/414,877

Coplanar waveguide frequency selective limiter

Inventors: Steven N. Stitzer, John D. Adam
Patented Case View Patent ↗
Granted: Dec 25, 1990 Filed: Sep 29, 1989
Inventors
Steven N. Stitzer
John D. Adam
Assignee (at issue)
Westinghouse Electric Company 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.

Order Certified Copies
Most orders are placed with the USPTO same day — all within 24 business hours.
Order via The Patent Place →
Pre-filled with this patent's details
Quick Facts
Patent No.
US 4,980,657
App. No.
07/414,877
Filed
1989-09-29
Granted
1990-12-25
Kind
A