Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Check valve

Check valve

US Patent 4368756 · Granted Jan 18, 1983

Estimated economic value: $634,000 ⓘ

Assignee

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Fertilizer container2025
Liquid fertilizer applicators and methods of forming liquid fertilizer concentra2022
Method and system for data quality management2014
In-register web splicer1989
Method and apparatus for inherent rotary joint calibration1984