LandOfFree - US Patents - Listing for Cryptography,Electric signal modification

Cryptography – Electric signal modification – Having production of printed copy

Portable electronic device capable of registering subprograms

Cryptography – Electric signal modification – Having production of printed copy

Portable thermal printing apparatus including a security device

Cryptography – Electric signal modification – Having production of printed copy

Postage accounting system including means for transmitting ASCII

Cryptography – Electric signal modification – Having production of printed copy

Postage meter system and verification of postage charges

Cryptography – Electric signal modification – Having production of printed copy

Postage metering system with dedicated and non-dedicated postage

Cryptography – Electric signal modification – Having production of printed copy

Postage payment system employing encryption techniques and accou

Cryptography – Electric signal modification – Having production of printed copy

Postal rating system with verifiable integrity

Cryptography – Electric signal modification – Having production of printed copy

Print system and printer capable of prevention of unjust...

Cryptography – Electric signal modification – Having production of printed copy

Print system, control method therefor, information...

Cryptography – Electric signal modification – Having production of printed copy

Process and apparatus for remote system inspection of a value di

Cryptography – Electric signal modification – Including particular structure or housing

Programmable cryptographic processing system and method

Cryptography – Electric signal modification – Having production of printed copy

Protecting images with an image watermark

Cryptography – Electric signal modification – Having production of printed copy

Public encryption of a stored print job