Patent classifications
F
MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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F01
MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
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F01M
LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
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11/00
Component parts, details or accessories, not provided for in, or of interest apart from, groups F01M1/00 - F01M9/00
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F01M11/04
Filling or draining lubricant of or from machines or engines
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