- Filter elements, fluid, hydraulic line (6)
- Filters and strainers, pipeline (9)
- Filters, general line: industrial (84)
- Firefighting apparatus (29)
- Firehose equipment: driers, rack, and reels (2)
- Firehose, except rubber (1)
- Sprinkler systems, fire: automatic (11)
- Lubricating systems, centralized (1)
- Lubrication equipment, industrial (16)
- Lubrication machinery, automatic (7)
- Gas generators (2)
- Gas producers (machinery) (2)
- Gas separators (machinery) (1)
- Generators: steam, liquid oxygen, or nitrogen (12)
- Separators for steam, gas, vapor, or air (machinery) (3)
- General industrial machinery, nec, nec (6)
- Assembly machines, non-metalworking (44)
- Baling machines, for scrap metal, paper, or similar material (4)
- Blast cleaning equipment, dustless (2)
- Brake burnishing or washing machines (1)
- Bridge or gate machinery, hydraulic (6)
- Centrifugal purifiers (5)
- Cremating ovens (2)
- Heaters, swimming pool: electric (6)
- Jack screws (1)
- Jacks, hydraulic (8)
- Liquid automation machinery and equipment (46)
- Robots, assembly line: industrial and commercial (36)
- Sifting and screening machines (6)
- Testing chambers for altitude, temperature, ordnance, power (1)
