{"@context": "https://schema.org", "@type": "BreadcrumbList", "itemListElement": [{"@type": "ListItem", "position": 1, "name": "Home", "item": "https://www.patentleaderboard.com/"}, {"@type": "ListItem", "position": 2, "name": "Active clearance control", "item": "https://www.patentleaderboard.com/patent/4928240"}]}
Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025

Active clearance control

US Patent 4928240 · Granted May 22, 1990

Estimated economic value: $7,759,000

Assignee

Inventors

View full patent text on Google Patents →