Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Absolute gas refractometer wherein the optical path difference of said refractometer is fixed

Absolute gas refractometer wherein the optical path difference of said refractometer is fixed

US Patent 5313271 · Granted May 17, 1994

Assignee

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Laser device2018
Rotation detection kit2013
Motion detection and analysis2005
Apparatus for producing and guiding a light beam2003
Frequency stabilized semiconductor laser2002
Real-time compensation system and method1999
Detector for explosive substances1998
Spectroscopic apparatus and methods1997
Laser interferometer for measuring object displacement over large distances1997
Interferometric measuring apparatus for making absolute measurements of distance1996
Apparatus for calibration of an angular displacement1994
Two component straightness interferometer apparatus for measuring movements of p1994