Resources Contact Us Home
Browse by Category: Main > Communications
Class Information
Number: 178/37
Name: Telegraphy > Systems > Printing > Recorders > Privacy (e.g., mechanical packaging or covering of printed message)
Description: Recorders for concealing or secreting the printed message from those not authorized to read it.

Patents under this class:

Patent Number Title Of Patent Date Issued
5031379 Message receiving arrangement Jul. 16, 1991
4809160 Privilege level checking instruction for implementing a secure hierarchical computer system Feb. 28, 1989
4701233 Method for folding and sealing sheets Oct. 20, 1987
4106060 Electronic mail box Aug. 8, 1978
3992571 Differential optical polarization detectors Nov. 16, 1976

  Recently Added Patents
Verification of computer-executable code generated from a model
Multi-dimensional tuple support in rule engines
Segmented display panel and camera with segmented display
Digital X-ray detector arrangement and digital X-ray imaging method
Memory device and semiconductor device
Non-disruptive configuration of a virtualization controller in a data storage system
High porosity ceramic honeycomb article containing rare earth oxide and method of manufacturing same
  Randomly Featured Patents
Method and apparatus for transferring data in a communication system
Power factor correction system
Percussion device
Methods and devices for analyte detection
Semiconductor memory device post-repair circuit and method
Tobacco products with increased nicotine
I/O control system and method
Three-dimensional multichip module
Method and apparatus for reading firearm microstamping
Cryogenic nitrogen generator with nitrogen expander