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Wood preservation
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Patent number 6,638,574
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Issue date Oct 28, 2003
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Commonwealth Scientific and Industrial Research Organisation
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Abdul Qader
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B27 - WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL NAILING OR STAPLING MACH...
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Method for treatment of wood
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Patent number 6,183,812
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Issue date Feb 6, 2001
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Flow Holdings GmbH (SAGL) LLC
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Keijo Hellgren
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B27 - WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL NAILING OR STAPLING MACH...
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Device for pressure treatment of wood
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Patent number 6,053,224
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Issue date Apr 25, 2000
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ASEA Brown Boveri AB
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Keijo Hellgren
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B27 - WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL NAILING OR STAPLING MACH...
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3282313
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Patent number 3,282,313
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Issue date Nov 1, 1966
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B27 - WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL NAILING OR STAPLING MACH...
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1998100
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Patent number 1,998,100
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Issue date Apr 16, 1935
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B27 - WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL NAILING OR STAPLING MACH...