Filters
on 12 Apr 1999
OIL BASE, INC.
72403425 · 23 Sep 1971
CLEANER FOR OIL FIELD EQUIPMENT AT THE OIL DRILLING SITE,CLEANER FOR O...
on 20 Jul 1998
OIL BASE, INC.
73107853 · 26 Nov 1976
001
ATTAPULGITE CLAY ADDITIVE FOR AQUEOUS DRILLING FLUIDS FOR DEVELOPING V...
on 24 Jul 1995
OIL BASE, INC.
71648787 · 15 Jun 1953
006
CHEMICAL ADDITIVES FOR WELL DRILLING FLUIDS,CHEMICAL ADDITIVES FOR WEL...
on 24 Jul 1995
OIL BASE, INC.
71648784 · 15 Jun 1953
006
CHEMICAL ADDITIVES FOR WELL DRILLING FLUIDS,CHEMICAL ADDITIVES FOR WEL...
on 18 Jul 1994
OIL BASE, INC.
72440835 · 10 Nov 1972
006
ADDITIVE MATERIAL AND FLUID LOSS REDUCER FOR SEA WATER OR AQUEOUS BRIN...
on 18 Jul 1994
OIL BASE, INC.
72440836 · 10 Nov 1972
006
SACKED MATERIAL FOR PREPARATION OF SEA WATER OR AQUEOUS BRINE DRILLING...
on 25 Jan 1993
OIL BASE, INC.
72338603 · 22 Sep 1969
001
006
...
CHEMICAL ADDITIVES FOR OIL BASE AND WATER BASE DRILLING FLUIDS INCLUDI...
on 04 Nov 1992
OIL BASE, INC.
72304380 · 05 Aug 1968
006
CHEMICAL EMULSIFIER, AND THINNER ADDITIVE FOR WATER BASE WELL DRILLING...
on 03 Nov 1992
OIL BASE, INC.
71555834 · 29 Apr 1948
012
OIL WELL DRILLING FLUID,OIL WELL DRILLING FLUID
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