4 results
F-10
EX-21.1
Grey Wolf International Drilling Corp
1 May 17
Registration of securities (Canada)
12:00am
F-10
EX-21.1
Grey Wolf International Inc
19 Feb 15
Registration of securities (Canada)
12:00am
F-4
EX-21.1
Di/perfensa Inc.
8 Feb 12
Registration of securities (foreign)
12:00am
F-4
EX-21.1
Precision Completion & Production Services Ltd.
4 May 11
Registration of securities (foreign)
12:00am
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