Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Mask with adjustable shield

Mask with adjustable shield

US Patent 5406944 · Granted Apr 18, 1995

Assignee

No assignee recorded.

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Ventricular cuff2022
Apical connectors and instruments for use in a heart wall2019
Ventricular cuff2018
Eyewear with detachable lens portion2002
Headband for a mask2000
Mask with elastic webbing1999
Mask with elastic webbing1998
Resistive element for spirometer1998
Windshield wiper blade cleaner1995
Face shield1994
Face shield/mask combination1994
Method and apparatus for exhalation analysis1993