Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Expiratory breathing exercise device

Expiratory breathing exercise device

US Patent 4403616 · Granted Sep 13, 1983

Assignee

No assignee recorded.

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Head section for a rotary cutting device2011
Aqueous particulate dispersion for reducing the water influx rate into a wellbor1998
Reed relay1997
Method of establishing a relay contact arrangement1996
Rake head1988
Apparatus and method for coating of inks applied at high speed1982
Low fluid loss foam1980
Chest drainage system with visual float means1980