Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Browse by Category: Main > Business
Class Information
Number: 434/329
Name: Education and demonstration > Question or problem eliciting response > Correctness of response indicated to examine by self-operating or examinee actuated means > Involving fluid flow
Description: Subject matter wherein the correctness of the examinee"s response is revealed by means involving movement of a fluid.










Patents under this class:

Patent Number Title Of Patent Date Issued
4354845 Identification structure for games and educational use and for other use Oct. 19, 1982











 
 
  Recently Added Patents
Integrated bug tracking and testing
Vehicle grille
Eyeglasses
Device for installing conducting components in structures
Visibility radio cap and network
Method and apparatus for band switching in wireless local access network
Semiconductor memory device, method of controlling read preamble signal thereof, and data transmission method
  Randomly Featured Patents
Multilayer alignment keys and alignment method using the same
Driving device of switching element in power conversion device using current control semiconductor switching element
Hydroisoindoline tachykinin receptor antagonists
Chiropractic table
Methods and apparatus for designing and using micro-targets in overlay metrology
Container for the storage of toner, container for the storage of developer and image-forming apparatus using these containers
Element made of a reinforced low density heat protective material and method to obtain said element
Avocado tree named `Alpha Krome`
Intramuscular medical electrical lead with fixation member
X-ray generating apparatus having an emitter formed on a semiconductor structure