E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
31/13, 149/13, 1
E21B 37/06 (2006.01) B08B 9/08 (2006.01) C02F 5/08 (2006.01) C09K 8/528 (2006.01) C23G 1/02 (2006.01) C23G 5/06 (2006.01)
Patent
CA 970262
LandOfFree
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