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How was this eligible for a patent? US 2013/0078073

US 2013/0078073 It is a gantry for a 3d printer. It uses what is commonly referred to as an H-Bot configuration. It was filed Sep.23, 2011. A simple Google search with the term H-Bot from 2009-2010 ...
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3D Printing - Seam Concealment for 3D Models - Patent Application - PRIOR ART REQUEST

This patent application filed by Stratasys claims to invent the concept of printing seamless 3D objects by hiding layer path endpoints inside the object’s visible outer surface. Letting this patent ...
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What SLS (selective laser sintering) 3D printing patents are expiring in 2014?

"In February 2014, key patents that currently prevent competition in the market for the most advanced and functional 3D printers will expire, says Duann Scott, design evangelist at 3D printing company ...
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Can 3-D Printing Materials be Patented After an Algorithm for Making Them is Published?

There is a growing concern in the open-source 3-D printing community that broad patent claims on materials for 3-D printing may hamper the open-source 3-D printing community's ability to innovate. ...
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CALL FOR PRIOR ART: 3D Printing application “Ribbon Filament and Assembly for Use in Extrusion-based Digital Manufacturing Systems” (13/530191)

This call for prior art is part of the EFF's effort to keep 3D printing open. Read about the initiative here, and check out Google Patents or the USPTO for full details about this particular ...
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CALL FOR PRIOR ART: 3D Printing application “Process for Producing Three-dimensionally Shaped Object and Device for Producing Same” (13/503217)

This call for prior art is part of the EFF's effort to keep 3D printing open. Read about the initiative here, and check out Google Patents or the USPTO for full details about this particular ...
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CALL FOR PRIOR ART: 3D Printing application “Additive Manufacturing System and Method for Printing Customized Chocolate Confections” (13/432424)

This call for prior art is part of the EFF's effort to keep 3D printing open. Read about the initiative here, and check out Google Patents or the USPTO for full details about this particular ...