Research/Patents/US 4887781
US 4887781

TRANSMITTERS

Assignee

Filed

Oct 25, 1985

Granted

Dec 19, 1989

Location

NUTLEY GB

Abstract

A transmitter for use in an aircraft navigation system, the transmitter comprising a body portion (35) having an end (36, 37) adapted for implanting into the ground and an opposite end fitted with an antenna (38,39), and stabilizing means (41) arranged to be rendered operative on impact of the transmitter with the ground.

Source: Google Patents

35 USC §181 Secrecy Order

Imposed

May 15, 1986

Rescinded

Sep 12, 1986

Duration

4 months

Inventor

  • 1NIGEL BROWNING

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Back to patent indexSource: USPTO 35 USC §181 secrecy order records