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
Isolated Australian coral reef fluorescent proteins and cell-based kinase or phosphatase platforms for cancer drug development
Semiconductor device and method of manufacturing the same
Transparent zebrafish and preparation method thereof
System and method for order placement in an electronic trading environment
Stevia formulation
Method and CTDevice for computer tomographic spiral scanning of a patient
System and method for content delivery
  Randomly Featured Patents
Open end ratchet wrench
Method and apparatus for providing a time based award
Nonlinear polymer composites and methods of making the same
Conveying apparatus
Linear motion drive system
Parallel optical fiber and strip illuminating arrays
Apicidin-derivatives, their synthetic methods and anti-tumor compositions containing them
Discrete multitone transmission and reception
LED light
Magnetic head with delayed connection heater shunting