Assignee
No assignee recorded.
Inventors
- Michael A. Mills (20 patents)
{"@context": "https://schema.org", "@type": "BreadcrumbList", "itemListElement": [{"@type": "ListItem", "position": 1, "name": "Home", "item": "https://www.patentleaderboard.com/"}, {"@type": "ListItem", "position": 2, "name": "Baseball card grade gauge", "item": "https://www.patentleaderboard.com/patent/D312048"}]}
Skip to contentUS Patent D312048 · Granted Nov 13, 1990
No assignee recorded.