{"@context": "https://schema.org", "@type": "BreadcrumbList", "itemListElement": [{"@type": "ListItem", "position": 1, "name": "Home", "item": "https://www.patentleaderboard.com/"}, {"@type": "ListItem", "position": 2, "name": "Internal combustion engine equipped with noise control device", "item": "https://www.patentleaderboard.com/patent/4257369"}]}
Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025

Internal combustion engine equipped with noise control device

US Patent 4257369 · Granted Mar 24, 1981

Estimated economic value: $3,480,000

Assignee

Inventors

View full patent text on Google Patents →