IP Library › Granted Patent US 4,677,402
Granted Patent Utility
US 4,677,402 · App. 06/661,353

Pluricavities microwave filter having cavities oriented in a sawtooth configuration

Inventors: Enrico Cesani, Andriano Forti
Patented Case View Patent ↗
Granted: Jun 30, 1987 Filed: Oct 16, 1984
Inventors
Enrico Cesani
Andriano Forti
Assignee (at issue)
Telettra - Telefonia Elettronica e Radio 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.

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 4,677,402
App. No.
06/661,353
Filed
1984-10-16
Granted
1987-06-30
Kind
A