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For the Inventor, By the Inventor

Wolverhampton, United Kingdom

Turner Powertrain Systems Limited


USPTO Granted Patents = 2

% Expired Patents = 100.0


Forward Citations = 4

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3 inventors (with patents filed for the assignee):

goldMedal Jonathan James Mulcaster (1 out of 1 patent)

silverMedal Jeffrey F Birkel (1 out of 2 patents)

bronzeMedal Alan J Griffiths (1 out of 2 patents)

4.  Sergei Penksik (1 patent)

5.  Brent G Drews (1 patent)

6.  Nuwan Janaka Gallege (0 patent)

7.  Adam D Freeman (0 patent)

8.  Steven Veitch (0 patent)

9.  John Wootton (0 patent)

10.  Richard Simon Hubble (0 patent)

11.  Stuart Walker (0 patent)

12.  Jeff Birkel (0 patent)

13.  Alan Griffiths (0 patent)


2 patents:

1. 9091703 - Measurement of shaft speed, angular displacement, position or movement (2015-07-28),
2. 7942074 - Gearbox with synchronizing clutch (2011-05-17),
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USPTO Data Jan 1 1976 - Sep 29 2026

2 Patents

#18 in Wolverhampton

#6,512 in United Kingdom

Wolverhampton, GB
Wolverhampton, United Kingdom

Turner Powertrain Systems Limited

Forward Citations = 4

3 inventors:

goldMedal Jonathan James Mulcaster (1 out of 1 patent)

silverMedal Jeffrey F Birkel (1 out of 2 patents)

bronzeMedal Alan J Griffiths (1 out of 2 patents)

4.  Sergei Penksik (1 patent)

5.  Brent G Drews (1 patent)

Please report any incorrect information to [email protected]
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