Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Browse by Category: Main > Communications
Class Information
Number: 181/33HB
Name: Acoustics >
Description:










Sub-classes under this class:

Class Number Class Name Patents
181/ Speaking tubes 0
181/.5 Miscellaneous 98
181/101 Geophysical or subsurface exploration 51
181/123 Echo system 10
181/125 Sound location 17
181/126 Anatomic or prosthetic relation 27
181/138 Mechanical telephone 6
181/139 Wave generation and detection 30
181/140 With vessel 16
181/141 Combined 150
181/142 Wave generation 62
181/143 Moving sound producer or deflector 13
181/144 Plural diaphragm sound sources 254
181/148 Diaphragm and enclosure 256
181/157 Diaphragm 75
181/175 Sound-modifying means 160
181/30 Auditorium 74
181/400 Wave coupling 19
181/403 Refrigerator compresssor muffler 195
181/404 Hobby craft engine muffler 5


Patents under this class:

Patent Number Title Of Patent Date Issued











 
 
  Recently Added Patents
Pattern identification apparatus, control method and program thereof
Bus controller for handling split transactions
Pharmaceutical compositions of paclitaxel, paclitaxel analogs or paclitaxel conjugates and related methods of preparation and use
Crosslinked core/shell polymer particles
Conductive polymer and a solid electrolytic capacitor using the same as a solid electrolyte
Methods and systems for use in tracking targets for direction finding systems
Visualization of information associated with applications in user interfaces
  Randomly Featured Patents
Method for optimally utilizing a peer to peer network
Process for making a deep power diode by thermal migration of dopant
Seat
Arrangement of magneto-optical recording medium which capable of reproducing an individual bit
Apparatus and method for balancing the transfer of electrical energy from an external power source to a vehicle
Method and device for the production of thin slices of frozen meat suitable for roasting or grilling
Display device with charge sharing
Composite friction elements and pultrusion method of making same
Hemojuvelin or dragon-like 2 (DL-2) polypeptides and variants and uses thereof
System in package and method of creating system in package