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
Apparatus for restoring setting information of a board management controller from a backup memory before loading an OS when a system board is replaced
Wafer level packaging structure with large contact area and preparation method thereof
Shield for vacuum circuit breaker
Reception circuit and signal reception method
Semiconductor device and fabrication method
System and method for combining different tablets into a pouch
Sweetener compositions having enhanced sweetness and improved temporal and/or flavor profiles
  Randomly Featured Patents
Computer having a heat sink structure incorporated therein
Communication and/or entertainment system for use in a head protective device
Cooling fan in sync with audio output level
Image processing device and image processing method
Method and apparatus for spatial error concealment of image
Epimerized derivatives of K5 polysaccharide with a very high degree of sulfation
Camera ball pod
Process to prepare metalated olefins
Method, apparatus and program for processing a three-dimensional image
Integrated circuit having logic circuits with latch elements connectable in shift register configuration for testing