Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Auto eye-refractometer

Auto eye-refractometer

US Patent 4421391 · Granted Dec 20, 1983

Estimated economic value: $10,393,000 ⓘ

Assignee

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Tire vulcanizing bladder and pneumatic tire2024
Method for refolding antibody, process for producing refolded antibody, refolded2017
Semiconductor integrated circuit device for providing series regulator2011
Frequency-multiplied clock signal output circuit2009
Microcomputer with mode decoder operable upon receipt of either power-on or exte2008
Reset detection circuit in semiconductor integrated circuit2007
Clamp circuit device2007
Integrated circuit device having clock signal output circuit2007
Method and system for designing an integrated circuit with reduced noise2007
Medical instrument control system2004
Ophthalmologic apparatus2004
Ophthalmic measuring device2004