Calgary, Canada

Citadel Drilling Ltd.


USPTO Granted Patents = 1


Forward Citations = 0

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3 inventors (with patents filed for the assignee):

goldMedal Vitaliy Shpak (1 out of 5 patents)

silverMedal Hossein Khorshidian (1 out of 8 patents)

bronzeMedal Elvin Mammadov (1 out of 9 patents)


1 patent:

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USPTO Data Jan 1 1976 - Sep 15 2026

1 Patents

#606 in Calgary

#9,430 in Canada

Calgary, CA
Calgary, Canada
Forward Citations = 0

3 inventors:

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