James L. Hanna

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Millersville, MD, US

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Patents Grantslast 30 patents

Information Patent Grant
Dual entry-double helix spiral chute
- Patent number 6,371,275
- Issue date Apr 16, 2002
- Northrop Grumman Corporation
- Jonathan D. Terrell
- B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL