Patent classifications
F
MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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F16
ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
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F16J
PISTONS; CYLINDERS; SEALINGS
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13/00
Covers or similar closure members for pressure vessels in general
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F16J13/02
Detachable closure members; Means for tightening closures
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