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3812-01 Aerospace Industries
3812-02 Missile & Rocket Components Mfrs
3812-03 Airport Equipment & Supplies
3812-05 Radar Manufacturers & Service
3812-98 Search Detection/Navigation Systs/Instr
3821-01 Laboratory Equipment & Supplies Mfrs
3821-02 Metallurgists Equipment & Supplies Mfrs
3821-98
3822-01 Static Controls
3822-02 Energy Systems
3822-03 Thermocouples
3822-04 Controls Control Systems & Regulators Mfrs
3822-98 Automatic Controls-Residential & Coml
3823-01 Annunciators Manufacturers
3823-02 Infrared Equipment
3823-03 Pyrometers
3823-04 Combustion Controls
3823-06 Pneumatic Equipment Components Mfrs
3823-07 Temperature Measuring Materials
3823-98 Industrial Measuring & Control Instruments
3824-01 Electro-Mechanical Equipment Manufacturers
3824-98 Totalizing Fluid Meters/Counting Device
3825-01 Recording Instruments Ind & Scientfc Mfrs
3825-98 Instruments Measuring & Testing Electricity
3826-98 Laboratory Analytical Instruments
3827-01 Magnifying Glasses
3827-02 Lenses Manufacturers
3827-03 Telescopes Manufacturers
3827-98 Optical Instruments & Lenses
3829-01 Compasses
3829-02 Hydrometers
3829-04 Drafting Room Equipment Manufacturers
3829-06 Radioactivity Instruments Supls Svc Mfr
3829-07 Surveying Instruments Manufacturers
3829-08 Testing Apparatus Manufacturers
3829-12 Air Pollution Measuring Equip Manufacturers
3829-13 Dynamometers
3829-14 Measuring Tapes & Rules
3829-15 Stress Relief Equipment & Service Ind
3829-16 Turnstiles
3829-99 Measuring & Controlling Devices Nec
3841-01 Surgical Instruments-Mfrs
3841-03 Hospital Equipment & Supplies Mfrs
3841-04 Physicians & Surgeons Equip & Supls Mfrs
3841-11 Veterinarians-Equipment & Supls Mfrs
3841-98 Surgical/Medical Instruments/Apparatus
3842-03 Artificial Limbs Manufacturers
3842-04 Hearing Aids Manufacturers
3842-05 Orthopedic Appliances Manufacturers
3842-06 Physical Therapy Equipment Mfrs
3842-07 Safety Equipment & Clothing Mfrs
3842-09 Surgical Appliances-Mfrs
3842-10 Surgical Dressings-Manufacturers
3842-11 First Aid Supplies Manufacturers
3842-13 Wheel Chairs Manufacturers
3842-14 Whirlpool Bath Equip & Supplies Mfrs
3842-98 Orthopedic Prosthetic & Surg Appl
3843-01 Dental Equipment Mfrs
3843-98 Dental Equipment & Supplies
3844-01 X-Ray Apparatus & Supplies Mfrs
3844-98 X-Ray Apparatus & Tubes
3845-01 Shielding-Magnetic Electrostatic Etc
3845-98 Electromedical & Therapeutic Apparatus
3851-02 Sunglasses & Sun Goggles Manufacturers
3851-03 Optical Goods Manufacturers
3851-04 Optical Laboratories Manufacturers
3851-05 Optical Systems Manufacturers
3851-06 Opticians Manufacturers
3851-07 Artificial Eyes Human
3851-98 Ophthalmic Goods
3861-01 Blueprinting Equipment & Supplies Mfrs
3861-02 Microfilming Service Equipment & Supls Mfrs
3861-03 Photographic Equipment Manufacturers
3861-98 Photographic Equipment & Supplies
3873-01 Clocks Manufacturers
3873-02 Watches Manufacturers
3873-98 Watches Clocks Clockwork Devices/Parts