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1963-10-01 |
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Gas pressure operated well apparatus |
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1934-07-14 |
1936-04-21 |
Technicraft Engineering Corp |
Means for splitting pipe collars in situ
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1934-10-10 |
1936-04-21 |
Technicraft Engineering Corp |
Collar breaker
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1939-07-15 |
1940-02-27 |
Lane Wells Co |
Bridging plug
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1940-02-09 |
1941-04-15 |
Du Pont |
Method of treating wells
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1947-10-14 |
1951-10-16 |
Lewis H Watkins |
Removal of metallic obstructions in well borings by oxidation
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1951-06-05 |
1955-03-01 |
Du Pont |
Polymers of high melting lactide
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1957-07-22 |
1962-04-17 |
Aerojet General Co |
Telescopic bridging plug-pressure set
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1957-11-21 |
1960-11-01 |
Texaco Inc |
Weighted drill collar
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1958-05-16 |
1963-02-05 |
William G Sweetman |
Chemical cutting method and apparatus for use in wells
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1958-09-02 |
1965-03-16 |
Gulf Research Development Co |
Fracturing process employing a heterogeneous propping agent
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1958-10-09 |
1962-10-09 |
Jet Res Ct Inc |
Apparatus for cutting oil well tubing and the like
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1961-03-31 |
1965-10-12 |
Otis Eng Co |
Pressure operated sleeve valve and operator
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1961-10-27 |
1962-07-31 |
Jersey Prod Res Co |
Weighted drill collar
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1961-12-19 |
1965-01-26 |
Texaco Inc |
Weighted drill collar
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1962-02-26 |
1965-09-14 |
Phillips Petroleum Co |
Device and process for igniting an oil stratum
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1963-05-23 |
1965-07-20 |
Pan American Petroleum Corp |
Spacers for fracture props
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1965-01-25 |
1967-02-07 |
Union Oil Co |
Method for treating subterranean formations
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1965-09-10 |
1968-01-30 |
Halliburton Co |
Method of fracturing and propping a subterranean formation
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1965-12-03 |
1969-07-15 |
Union Oil Co |
Low fluid loss well treating composition and method
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1966-02-14 |
1968-01-23 |
Dow Chemical Co |
Hydraulic fracturing fluid-bearing earth formations
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1966-10-24 |
1968-12-03 |
Mobil Oil Corp |
Formation consolidation using a combustible liner
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1971-10-21 |
1974-01-08 |
American Cyanamid Co |
Water-degradable resins containing recurring,contiguous,polymerized glycolide units and process for preparing same
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1972-03-03 |
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Mobil Oil Corp |
Well treating process using sacrificial plug
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1973-02-20 |
1976-05-04 |
United States Borax & Chemical Corporation |
5-Trifluoromethyl-7-aminobenzimidazoles herbicides
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1973-03-23 |
1976-05-04 |
United States Borax & Chemical Corporation |
5-Trifluoromethyl-7-nitrobenzimidazoles
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1973-04-16 |
1974-08-13 |
Shell Oil Co |
Dissolving siliceous materials with self-acidifying liquid
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1973-05-03 |
1975-10-14 |
American Cyanamid Co |
Process for polymerizing a substantially pure glycolide composition
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1973-05-25 |
1976-07-13 |
Texaco Inc. |
Controlled rate acidization process
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1974-05-15 |
1975-03-04 |
Shell Oil Co |
Self-acidifying treating fluid positioning process
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1974-06-03 |
1976-06-01 |
The Dow Chemical Company |
Self-breaking viscous aqueous solutions and the use thereof in fracturing subterranean formations
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1975-04-16 |
1976-12-21 |
Standard Oil Company |
Oil fracturing spacing agents
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1975-06-13 |
1976-12-14 |
Cmi Corporation |
Material transfer mechanism
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1975-09-26 |
1978-12-26 |
Walter A. Hedden |
Methode hydraulique de fractionnement a l'aide d'un agent d'activation a la bauxite frittee
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1975-11-03 |
1977-05-17 |
Tyler Holding Company |
Explosive container
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1976-02-04 |
1978-05-09 |
Tyler Holding Company |
Hand-held detonator
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1976-11-26 |
1979-10-02 |
Celanese Corporation |
Well-treating compositions
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1977-08-29 |
1979-12-18 |
Atlas Powder Company |
Delay actuated explosive device
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1977-09-27 |
1980-01-22 |
Loffland Brothers Company |
Igniter for oil and/or gas well drilling operation
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1977-11-16 |
1980-02-12 |
Exxon Production Research Company |
Method and apparatus for placing buoyant ball sealers
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1978-04-24 |
1979-09-11 |
Atlas Powder Company |
Recovery of nitrated compounds using solvent extraction and distillation
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1978-11-13 |
1981-08-04 |
Wisconsin Alumni Research Foundation |
Amorphous metal structures and method
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1979-02-23 |
1981-07-14 |
Rankin E Edward |
Apparatus for retrieving drill collars
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1979-12-17 |
1981-10-20 |
International Business Machines Corporation |
Method for providing self-aligned conductor in a V-groove device
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1980-04-21 |
1983-11-29 |
Texaco Development Corp. |
Propping agent for fracturing fluids
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1980-08-29 |
1982-06-15 |
The United States Of America As Represented By The United States Department Of Energy |
Method for gasification of deep, thin coal seams
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1980-09-02 |
1986-09-23 |
Gearhart Industries, Inc. |
Staged chemical pipe cutter
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1980-10-03 |
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Jet Research Center, Inc. |
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1981-01-13 |
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Chemical method and apparatus for perforating drill collars
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1981-04-09 |
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Sperry Corporation |
Superconductive tunnel junction integrated circuit
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1981-04-20 |
1982-09-28 |
The Babcock & Wilcox Company |
Oscillating soot blower mechanism
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1981-08-10 |
1988-01-05 |
Exxon Production Research Company |
Use of degradable ball sealers to seal casing perforations in well treatment fluid diversion
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1981-08-10 |
1983-06-14 |
Exxon Production Research Co. |
Method for reducing the permeability of subterranean formations
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1981-08-10 |
1985-07-02 |
Exxon Production Research Co. |
Composition for reducing the permeability of subterranean formations
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1981-12-24 |
1984-01-03 |
General Motors Corporation |
Intercell flame arrestor for a battery venting and filling manifold
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1982-03-11 |
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Striping apparatus for marking surfaces
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1982-07-28 |
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Motorola, Inc. |
Method and apparatus for the measurement of the internal circumference of compliant rings
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1982-09-27 |
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Halliburton Company |
Method and compositions for fracturing subterranean formations
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1982-10-15 |
1988-05-17 |
The Babcock & Wilcox Company |
Panel indicator
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1982-12-13 |
1985-07-09 |
Newjig Limited |
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1983-01-13 |
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Air Products And Chemicals, Inc. |
Method and apparatus for perforating or cutting with a solid fueled gas mixture
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1983-01-17 |
1985-08-20 |
Sperry Corporation |
Superconductive tunnel junction device with enhanced characteristics and method of manufacture
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1983-03-21 |
1985-11-19 |
Sperry Corporation |
Superconductive integrated circuit incorporating a magnetically controlled interferometer
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1983-05-25 |
1986-06-03 |
Rca Corporation |
Distributed processor with periodic data transfer from each memory to like addresses of all other memories
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1983-05-31 |
1986-11-11 |
Monitor Engineers Limited |
Remote control robot vehicle
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1984-02-01 |
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Don L. Smith |
Yeast and dough condition compositions
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1984-02-29 |
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Computer implemented go/no go gauging system
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1984-09-04 |
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Local display technique for fiber optic illuminator/hood system
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1985-01-07 |
1986-07-08 |
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Pipe cutting apparatus
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1985-06-19 |
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Britoil Plc |
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1985-12-27 |
1987-12-29 |
E. I. Du Pont De Nemours And Company |
Composition and method for temporarily reducing permeability of subterranean formations
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1986-03-10 |
1987-04-07 |
Texas Metal Casting Co., Inc. |
Attachment apparatus for columnar member
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1986-07-24 |
1987-10-20 |
Halliburton Company |
Wet connector for use with drill pipe conveyed logging apparatus
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1986-09-05 |
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Portable cleaning container
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Procedimiento para la preparacion de un homopolimero de vinilamina de alto peso molecular
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Apparatus for slant punching a plurality of elongate holes in a penetrable blank of material
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Portable cleaning container
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Portable cleaning container
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Halliburton Services |
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Conoco Inc. |
Formation fracturing process
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Well treatment process
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Universal bus interface
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Device and method for programming critical hardware parameters
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Multi-run chemical cutter and method
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System for testing internal nodes
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System for testing internal nodes in receive and transmit FIFO's
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Method for improving drill cuttings transport from a wellbore
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Conoco Inc. |
Composition and placement process for oil field chemicals
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Placement process for oil field chemicals
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Halliburton Company |
Method for effecting controlled break in polysaccharide gels
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Conoco Inc. |
Process for the preparation of fluid loss additive and gel breaker
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Downhole gas separator
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Downhole tool apparatus with non-metallic components and methods of drilling thereof
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System with devices connected in sequence to receive information in a predetermined order
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In situ reversible crosslinked polymer gel used in hydrocarbon recovery applications
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1991-12-04 |
Ici Plc |
Chemical process
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The Babcock & Wilcox Company |
Port rodder with anti-drift feature
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1992-02-25 |
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Hub assembly for sootblower
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Oryx Energy Company |
Overbalance perforating and stimulation method for wells
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1991-08-02 |
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Water bottle cap
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Process for the preparation of 3-(α-methoxy)methylenebenzofuranones and intermediates therefor
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Rotationally operated back pressure valve
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Downhole chemical cutting tool and process
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Mitsui Toatsu Chemicals, Incorporated |
Industrial woven fabric and composite sheet comprising same
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1992-06-18 |
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Cmi Corporation |
Paving machine with drop-then-stop dowel bar insertion
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1992-06-18 |
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Cmi Corporation |
Paving machine with midline dowel bar insertion
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1992-07-20 |
1993-12-07 |
The Babcock & Wilcox Company |
Self-adjusting packing gland for sootblower
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1992-08-24 |
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Process for forming notches in an irrigation lateral
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At&T Corp. |
Telephone call monitoring method and apparatus
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1992-10-07 |
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International Business Machines Corporation |
Method and system for position error signal generation using auto correlation
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1992-10-22 |
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Gas Research Institute |
System for characterizing pressure, movement, temperature and flow pattern of fluids
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1992-10-23 |
1993-12-21 |
Gas Research Institute |
System for characterizing pressure, movement, and temperature of fluids
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1992-11-03 |
1994-09-06 |
Halliburton Company |
Apparatus and method of anchoring and releasing from a packer
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1993-04-05 |
1994-07-19 |
Dowell Schlumberger Incorporated |
Control of particulate flowback in subterranean wells
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Halliburton Company |
Hydraulic setting tool and method of use
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Halliburton Company |
Aqueous gel fluids and methods of treating subterranean formations
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Well drilling and servicing fluids which deposit an easily removable filter cake
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Leak detector
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Halliburton Company |
Temporary plug system
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Bidirectional disappearing plug
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Shell Oil Company |
Formation fracturing
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Mcr Corporation |
Anchor system for pipe cutting apparatus
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Wellbore stimulation and completion device
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Halliburton Company |
Fracturing fluid with encapsulated breaker
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1995-02-21 |
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The Mohaupt Family Trust |
Firing Head
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Pressure actuated pipe cutting tool
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Explosive pipe cutting
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Hard target penetrator with multi-segmenting casing cutter
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Lancet
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Becton Dickinson And Company |
Lancet assembly
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Halliburton Company |
Downhole tool apparatus with non-metallic packer element retaining shoes
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Chemical cutter
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Directional microphone
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Process for forming watering notches in an irrigation ditch and apparatus adapted for use with the process
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Dissolvable well plug
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Intel Corporation |
Method and an apparatus for minimizing perturbation while monitoring parallel applications
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Portable game hoist
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