Transvertex patents

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Transvertex patents

Below is an overview of the various patents that have been filed internationally by Transvertex for their various products. Most of their patents were registred in a variety of countries. Whenever possible, we've made all of these available for download. If you have knownledge of a patent that is not listed here, please contact us.

GB1010223 / 14 August 1962
FR1331129 / 13 August 1962
This patent is about improvements of a cipher machine. It was filed in August 1962 and was published on 17 November 1965. It names Per-Erik Ahlman and Vigo Waldemar Lindstein as the inventor. The drawings in this patent show a machine that resembles the earlier HC-9.
GB1152707 / 27 May 1966
FR1479726 / 11 May 1966
British patent for a mechanical cipher machine with pin-wheels and a full keyboard. The patent was filed in 1966 and was published on 21 May 1969. It was registered to Transvertex and names Florin Bengt and Loimaranta Kalevi as the inventors.
GB1235571 / 5 March 1969
FR2036379 / 12 March 1969
US3557307 / 10 March 1969
CH482257 / 6 March 1969
DE1911175 / 5 March 1969
This patent for an improved ciphering machines was filed in March 1969 on behalf of AB Transvertex. It names Bengt Florin and Kalevi Loimaranta as the inventors. The patent was published in the UK on 16 June 1971.
FR2076145 / 15 January 1971
SE348067 / 16 January 1971
NO127884 / 12 January 1971
GB1303001 / 18 January 1971
DK132476 / 15 January 1971
DE2101834 / 15 January 1971
This patent is for a ciphering device, specifically designed for password signalling.


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� Crypto Museum. Created: Wednesday 04 January 2012. Last changed: Monday, 04 April 2022 - 08:04 CET.