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
Aspect ratio enhancement
Touch screen guitar
Process for preparing red cocoa ingredients, red chocolate, and food products
Memory with separate read and write paths
System and method for operating an electric power converter
Process for producing liquid crystal element, and liquid crystal element
Systems and methods for identifying similar documents
  Randomly Featured Patents
Hoses for electric cleaner
Adhesion-promoted , heatsealable and peelable polyester film, process for its production and its use
Cushion for a motorcycle gearshift lever
Dynamic random access memory cell layout and fabrication method thereof
System and method for liquid absorption air conditioning
Container for prepackaged pet meals
Pharmaceutical preparation
Method of preparing photochromic glass
Display housing for computing device
MOS field effect transistor with an improved lightly doped diffusion layer structure and method of forming the same