Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Browse by Category: Main > Business
Class Information
Number: 434/357
Name: Education and demonstration > Question or problem eliciting response > Grading of response form > Comparison of response form with standard answer form > Means sensing aperture representing response
Description: Subject matter including means for detecting an aperture made in a means (e.g., a sheet, etc.) by an examinee to indicate his response.










Patents under this class:

Patent Number Title Of Patent Date Issued
6865369 Receptacle and plug connectors Mar. 8, 2005
4458435 Removable material swatch display incorporating type matched fixed material swatches Jul. 10, 1984











 
 
  Recently Added Patents
System and method for measuring an analyte in a sample
Universal handle extension for unloading butterfly valve for tank trailer or other vehicle
Subcarrier cluster-based power control in wireless communications
Listing recommendation using generation of a user-specific query in a network-based commerce system
Visual universal decryption apparatus and methods
Flat panel display device and stereoscopic display device
Nucleic acid-based tests for prenatal gender determination
  Randomly Featured Patents
System for searching property listings based on location
Motor device wherein accurate sizing is possible
Flexible sampling plans and user interface for coordinate measuring machines
Method and apparatus for encoding color information on a monochrome document
Down-hole motor universal joint
Storage system and storage system data migration method
Biomedical electrode
Iron golf club head
Non-volatile semiconductor memory device and method of fabricating thereof
Big dash shield and seat shields