Walter Dray — 1 Patent at Ciena

Walter Dray has been granted 1 US patent while listed as an inventor at Ciena. All of these patents were granted in 2003. Walter Dray ranks #2,406,284 of 4,157,543 US inventors in our database (top 57.9%). Patent records list Walter Dray in Carlisle, MA, US.

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Showing 1–1 of 1 patents

Patent #	Title	Co-Inventors	Date	Approx Value ⓘ
6538987	Rapid ring protection switching system	Dan Cedrone, Ed Klein, James L. Regan, Bappa Sinha, Ming-Teh Ma +1 more	2003-03-25	$40,936,000

Walter Dray — 1 Patent

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