E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
166/50
E21B 33/064 (2006.01) E21B 15/02 (2006.01) E21B 19/00 (2006.01) E21B 33/03 (2006.01)
Patent
CA 1022455
Eik Geir
Nybo Reidar O.
A/s Akers Mek. Verksted
Finn Tveten And Co. A/s
LandOfFree
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