<https://www.optikos.com/wp-content/uploads/2013/12/US06226081-20010501-D00020.png>
<http://schema.org/datePublished>
"2013-12-03T18:09:23+00:00"^^<http://schema.org/Date>
<https://www.optikos.com/patents/optical-height-fill-detection-system-associated-methods-us-6226081-b1/us06226081-20010501-d00020/>