Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Electro-acoustic device for the underwater signalling and identification of a vessel

Electro-acoustic device for the underwater signalling and identification of a vessel

US Patent 4335452 · Granted Jun 15, 1982

Assignee

No assignee recorded.

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Apparatus for dispensing a treatment liquid to a respective agricultural crop2021
Sensorized axle box-bearing unit for supporting a railway axle2020
Rolling bearing temperature measurement system in a railway axle-box and associa2017
System for harvesting energy including a counterweight and a system for controll2015
Modulators of Itch ubiquitinase activity2015
Linear actuator2014
Linear actuator2014
Device to progressively break the woody shell, particularly of fruits of the dru2000
Take-up module for continuous filaments1990
Wire matrix printer with damping means1986
Device for the recognition and progressive cancellation of information recorded 1982