| http://www.w3.org/ns/prov#value | - Patent US6717572 - Modular rolling axis apparatus - Google PatentsSearch Images Maps Play YouTube News Gmail Drive More ??Sign inAdvanced Patent SearchPatentsA modular rolling axis apparatus for installing in a computer peripheral device such as a keyboard, a mouse device, a joystick, a remote controller, a mobile phone, a notebook computer, or a handheld computer or the like consists of a circuit
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