Virtual Patent Marking

The following VSG products are protected by one or more patents in the United States and elsewhere. This website is provided to satisfy the virtual patent marking provisions of various jurisdictions including Section 16 of the America Invents Act and to serve as notice under U.S.C. §287(a). The following list of VSG products and patents may not be all-inclusive. For example, additional products not listed here may be protected by one or more patents, and patents listed here may cover one or more product that is or is not listed.
Additional patent applications may be pending in the United States and elsewhere
Last updated: May 12, 2026.