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John Hammond
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Brisbane, AU
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last 30 patents
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Patent Grant
Pipe hanger clamp
Patent number
D676738
Issue date
Feb 26, 2013
Sitka Developments Pty Ltd
John Hammond
D08 - Tools and hardware
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Patent Grant
Pipe hanger clamp
Patent number
D653530
Issue date
Feb 7, 2012
Sitka Developments Pty Ltd
John Hammond
D08 - Tools and hardware