User:Gallsup: Revision history

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6 April 2011

22 March 2011

9 February 2011

4 February 2011

28 January 2011

24 January 2011

  • curprev 13:2613:26, 24 January 2011 Gallsup talk contribs 728 bytes +728 Created page with "Patent: 4737788 Helicopter Obstacle Detector Filed: 4 April 1985 Issued: 12 April 1988 Obstacle Detector for helicopters and other aircraft having rotary blades. The detector us..."