{"@context": "https://schema.org", "@type": "BreadcrumbList", "itemListElement": [{"@type": "ListItem", "position": 1, "name": "Home", "item": "https://www.patentleaderboard.com/"}, {"@type": "ListItem", "position": 2, "name": "Carriage for drop-down mask assembly", "item": "https://www.patentleaderboard.com/patent/D421299"}]}
Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025

Carriage for drop-down mask assembly

US Patent D421299 · Granted Feb 29, 2000

Assignee

Inventors

View full patent text on Google Patents →