U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Integral monitor for ILS localizer

Patent 4605930 Issued on August 12, 1986. Estimated Expiration Date: Icon_subject August 12, 2003. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Patent References

Monitor for localizer antenna arrays Patent #: 4107688
Issued on: 08/15/1978
Inventor: Alford

Inventor

Application

No. 06/468170 filed on 04/20/1983

US Classes:

342/413Localizer transmitter or receiver

Examiners

Primary: Cangialosi, Salvatore
Assistant: Issing, Gregory C.

International Classes

G01S 1/16 (20060101)
G01S 1/00 (20060101)

Abstract

An improved integral monitor for the Instrument Landing System Localizer is disclosed, which uses resistive networks and transmission lines to generate analogs of radiated signal at three specified angles from runway centerline.

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