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

Damper valve

US Patent 4239061 · Granted Dec 16, 1980

Estimated economic value: $4,800,000 ⓘ

Assignee

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Filter bag hooks1983
Filter bag attachment1982
Filtering apparatus1981
Bag filter thimble1981
Filter bag retaining system with removable thimble extension1980