Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Apparatus and method for sensing a substance on a liquid surface

Apparatus and method for sensing a substance on a liquid surface

US Patent 4223552 · Granted Sep 23, 1980

Estimated economic value: $2,733,000 ⓘ

Assignee

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Means and method for controlling the operation of a drying apparatus1980