Resources Contact Us Home
Browse by Category: Main > Electrical & Energy
Class Information
Number: 290/74
Name: Prime-mover dynamo plants >

Sub-classes under this class:

Class Number Class Name Patents
290/1R Miscellaneous 901
290/2 Heating plants 204
290/3 Train 32
290/45 Traction 121
290/46 Starting and generating dynamo 134
290/47 Electric-starting motor with generator 28
290/48 Electric-starting motor 175
290/49 Rotary field and armature 13
290/4R Plural prime mover 148
290/5 Alternating current, rotary field and armature 15
290/50 Battery 57
290/51 Engine control 54
290/52 Turbogenerators 643
290/53 Tide and wave motors 703
290/54 Fluid-current motors 912
290/6 Multiple-armature dynamo 30
290/7 Electric control 57

Patents under this class:

Patent Number Title Of Patent Date Issued

  Recently Added Patents
Method and apparatus for secure transfer and playback of multimedia content
Liquid crystal display wherein the data lines covered by each pixel electrode are supplied with data signals of opposite polarities
Use of emerging non-volatile memory elements with flash memory
Lightning-protective explosion-preventive fastener
Device and method for adjusting a chrominance signal based on an edge strength
Multichannel device utilizing a centralized out-of-band authentication system (COBAS)
Hepatitis C virus inhibitors
  Randomly Featured Patents
Process for extraction of analytes from solid and materials and filtration
Snow shelter maker--an apparatus and method for creating a shelter based on a horizontal surface of revolution
Method and device for noise filling
Motor proteins and methods for their use
Pay at the table system
Drying furnace for use in coating drying
Visual validation mark for bank checks and other security documents
Interventional MR imaging with detection and display of device position
Display frame post