Key patent expiration dates: Revision history

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Legend: (cur) = difference with latest revision, (prev) = difference with preceding revision, m = minor edit.

27 January 2023

20 January 2023

14 January 2023

13 January 2023

8 January 2023

2 January 2023

19 December 2022

13 December 2022

5 December 2022

18 November 2022

17 November 2022

5 November 2022

4 November 2022

31 August 2021

20 August 2021

16 April 2021

27 November 2011

23 November 2011

14 November 2011

13 November 2011