Resources Contact Us Home
Browse by Category: Main > Communications
Class Information
Number: 367/148
Name: Communications, electrical: acoustic wave systems and devices > Signal transducers > Underwater type > Exclusive-type transmitter > Electrically driven underwater bells or sirens
Description: Subject matter comprising either an electrically driven bell or an electrically driven siren.

Patents under this class:

Patent Number Title Of Patent Date Issued
8687464 Marine siren seismic source Apr. 1, 2014
5787052 Snap action rotary pulser Jul. 28, 1998
5583827 Measurement-while-drilling system and method Dec. 10, 1996
4852510 Scuba whistle Aug. 1, 1989
4514834 Expendable underwater acoustic projector Apr. 30, 1985
4332017 Mechanoacoustic transducer for use in transmitting high acoustic power densities into geological formations such as oil-saturated sandstone or shale May. 25, 1982
4324135 Speed indicator for fishing gear Apr. 13, 1982
4198706 Generation of low frequency sound under water Apr. 15, 1980
4007805 Cavity producing underwater sound source Feb. 15, 1977

  Recently Added Patents
Fixing device and image forming apparatus
Monitoring system
Methods and systems for automatically identifying a logical circuit failure in a data network
System and method for providing security in browser-based access to smart cards
Electronic component, a semiconductor wafer and a method for producing an electronic component
Communication terminal device, communication system, and communication control method
LED-array package
  Randomly Featured Patents
Process for growing a silicon crystal segment substantially free from agglomerated intrinsic point defects which allows for variability in the process conditions
Structure for maintaining gap of paper money discriminating apparatus
Virtual I/O emulator in a mainframe environment
Inhibition of angiogenesis by high molecular weight kininogen and peptide analogs thereof
Collector optical system
Method and apparatus for aiding dilatation catheterization
2,3-Dimethyl-5-(2,2,3-trimethyl-3-cyclopenten-1-yl)-2-pentanol perfume compositions
Electromagnetic bond welding of thermoplastic pipe distribution systems
Latex-based, aqueous developable photopolymers and use thereof in printing plates
Shoe upper