4. Internal-combustion engines
  5. Miscellaneous
  6. Fuels, lubricants and additives

E. Rollins Cross

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2-cycle engine

Internal-combustion engines – Two-cycle – Whirl through piston-controlled ports
Patent

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4-Cycle engine

Internal-combustion engines – Four-cycle – Crankcase compression of air or combustible mixture to be...
Patent

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4-stroke, stratified gas engine

Internal-combustion engines – Four-cycle – Scavenging
Patent

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Acid dispenser for water softener unit

Liquid purification or separation – Flow – fluid pressure or material level – responsive – Plural elements controlled
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Activated carbon and preparation thereof

Liquid purification or separation – With alarm – indicator – register – recorder – signal or... – Responsive to fluid flow
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Profile ID: LFUS-PAI-P-5844

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