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
Data processing apparatus including reconfigurable logic circuit
System and method for parallel video processing in multicore devices
Control system of substrate processing apparatus, collecting unit, substrate processing apparatus and control method of the substrate processing apparatus
Method of treating a preceramic material
Organic electroluminescent element
Semiconductor device and method for manufacturing same
Method and system for prioritizing points of interest for display in a map using category score
  Randomly Featured Patents
Solar absorbers with layers of nickel/chromium alloy and dielectric material
Tree sprout remover
Methods for configuring sender and receiver antennas, corresponding storage means and nodes
Portable keyboard
Portable grill
Injection molding of long fiber reinforced thermoplastics
Acoustic wave device
Maintenance system and method
Semiconductor device and method of fabricating the same
System clock monitoring apparatus and motor control system