Douglas L. Sarkkinen

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Battle Ground, WA, US

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Patents Grantslast 30 patents

Information Patent Grant
Tendon-identifying, post tensioned concrete flat plate slab and met...
- Patent number 7,937,901
- Issue date May 10, 2011
- Douglas L. Sarkkinen
- E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES

Patents Applicationslast 30 patents

Information Patent Application
Tendon-identifying, post tensioned concrete flat plate slab and met...
- Publication number 20060230696
- Publication date Oct 19, 2006
- Douglas L. Sarkkinen
- E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES