Birmingham, United Kingdom

Nt Door Controls Limited


USPTO Granted Patents = 2

Forward Citations = 17

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3 inventors (with patents filed for the assignee):

goldMedal Michael D Knight (1 out of 3 patents)

silverMedal Duncan Richard Guthrie (1 out of 1 patent)

bronzeMedal David P Yates (1 out of 1 patent)


2 patents:

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USPTO Data Jan 1 1976 - Dec 16 2025

2 Patents

#90 in Birmingham

#6,372 in United Kingdom

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Birmingham, United Kingdom
Forward Citations = 17

3 inventors:

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