Purple_cipher_machine_analog_bw_photo_NCM.jpg
Size of this preview:
800 × 584 pixels
.
Other resolutions:
320 × 233 pixels
|
640 × 467 pixels
|
802 × 585 pixels
.
Summary
| Description |
English:
Analog of the Japanese Type B Cipher Machine (PURPLE) built by the U.S. Army Signal Intelligence Service during World War II. Photograph on display at the National Cryptographic Museum.
|
| Date | |
| Source | Cropped and rotated from File:PURPLE analog, improved version of March 1944 - National Cryptologic Museum - DSC07831.JPG and said improvements released under CC0 by-- agr ( talk ) 00:10, 25 April 2019 (UTC) |
| Author | Daderot |
Licensing
|
This work is in the
public domain
in the United States because it is a
work prepared by an officer or employee of the United States Government as part of that person’s official duties
under the terms of
Title 17, Chapter 1, Section 105
of the
US Code
.
Note
: This only applies to original works of the Federal Government and not to the work of any individual
U.S. state
,
territory
, commonwealth, county, municipality, or any other subdivision. This template also does not apply to postage stamp designs published by the
United States Postal Service
since 1978
. (See §
313.6(C)(1)
of Compendium of U.S. Copyright Office Practices). It also does not apply to certain US coins; see
The US Mint Terms of Use
.
|
|
| This file has been identified as being free of known restrictions under copyright law, including all related and neighboring rights. | ||