US 4675477
ELECTRONIC DEVICE PROVIDING AUTOMATIC PERMUTATIONS OF A VIGENERE SQUARE
Assignee
Filed
May 13, 1964
Granted
Jun 23, 1987
Location
Abstract
This invention relates to cryptographic teletypewriter systems and more picularly to an electronic device for use in such systems which automatically provides permutations of a Vigenere Square.
Source: Google Patents
35 USC §181 Secrecy Order
Imposed
Mar 12, 1982
Rescinded
Nov 7, 1986
Duration
4 years, 8 months
Record Details
- Patent number
- US 4675477
- Application
- 04367257
- Aerospace match
- No
- Dataset source
- 35 USC §181 SO records
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Back to patent indexSource: USPTO 35 USC §181 secrecy order records