Patent
Patentdatenbank Kanada 1959

- Patent:CA568946 13.01.1959 Butler, Thomas M. (P) Burroughs (P) Corp. : Control means for calculating machine
- Patent:CA569455 27.01.1959 Brüning, Paul Resulta (P) : TENS TRANSFER DEVICE
- Patent:CA573543 07.04.1959 Sundstrand, Oscar (P) Victor (P) Adding Machine Co. : Printing calculating machine