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OPTICAL VIEWING APPARATUS FOR AIRCRAFT DOORWAY

  • US 20150307208A1
  • Filed: 11/14/2013
  • Published: 10/29/2015
  • Est. Priority Date: 11/20/2012
  • Status: Active Application
First Claim
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2-1. The viewing device of claim 1, wherein the predetermined spatial area is located exteriorly to a door of the aircraft.

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