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For the Inventor, By the Inventor

Warwickshire, United Kingdom

Cegelec Controls Limited


USPTO Granted Patents = 2

Forward Citations = 35

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2 inventors (with patents filed for the assignee):

goldMedal Allan David Crane (1 out of 27 patents)

silverMedal John R Nightall (1 out of 1 patent)


2 patents:

1. 5990685 - Apparatus for and method of monitoring an earth-leakage state of a power (1999-11-23),
2. 5757599 - Protection arrangement for a switching device (1998-05-26),
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USPTO Data Jan 1 1976 - Sep 29 2026

2 Patents

#14 in Warwickshire

#6,512 in United Kingdom

Warwickshire, GB
Warwickshire, United Kingdom

Cegelec Controls Limited

Forward Citations = 35

2 inventors:

goldMedal Allan David Crane (1 out of 27 patents)

silverMedal John R Nightall (1 out of 1 patent)

Please report any incorrect information to [email protected]
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