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*ALC
on 20 Oct 1989
NALCO CHEMICAL COMPANY
367234 · 14 Aug 1973
001
Hydrocracking catalysts, namely petroleum hydrotreating catalysts.
on 28 Jul 1989
NALCO CHEMICAL COMPANY
367236 · 14 Aug 1973
001
Catalyst for use in treating liquid and gaseous hydrocarbons.
on 31 Dec 1969
NALCO COMPANY
337061 · 15 Oct 1970
001
004
Water treating chemicals for preventing scale and corrosion in cooling...
on 21 Apr 1967
KEYSTONE SUPPLIES COMPANY A PARTNERSHIP
297493 · 03 Jun 1966
006
008
Wire rope blocks.,Sledge hammers.
on 02 Aug 1996
NALCO CHEMICAL COMPANY
287379 · 10 Feb 1965
001
A boiler water chemical additive to inhibit scale formation.
on 25 Nov 1996
NALCO CHEMICAL COMPANY
284660 · 21 Sep 1964
002
Refractory coating compositions for metals.
on 23 Jan 1980
N.L INDUSTRIES INC.
276631 · 05 Jul 1963
017
029
Granular and fibrous cellulosic materials coated with polyolefins usef...
on 21 May 1993
NALCO CHEMICAL COMPANY
263351 · 09 Jun 1961
001
Chemical compounds for the control of slimes commonly occuring in indu...
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CA
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Nalco chemical company (15)
Ecolab usa inc. (11)
Nalco company (3)
Duro-test corporation (a new york corporation) (1)
Ecolab usa inc. (1)
Fisons limited (private limited company) (1)
G.O holdings inc (1)
Keystone supplies company a partnership (1)
N.L industries inc. (1)
Nalco chemical company 01000000 (1)
Nalco company a delaware corporation (1)
Oracle service networks corporation (1)
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Correspondents
Marks & clerk (10)
Smart & biggar lp (5)
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