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This page displays all 「FI」 in main group E21F1/00. |
HB:Handbook | ||||
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CC:Concordance | |||||
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Ventilation of mines or tunnels; Distribution of ventilating currents (ventilating rooms or spaces in general F24F) [2] | HB | CC | 2D062 | |
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Controlling tunnel ventilation | HB | CC | 2D062 | |
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Others | HB | CC | 2D062 | |
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.Test models (analogue computers therefor G06G 7/50) | HB | CC | 2D062 | |
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.Air ducts (suspension devices E21F 17/02) | HB | CC | 2D062 | |
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..Duct connections (tube connections in general F16L) | HB | CC | 2D062 | |
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.Ventilation arrangements in connection with air ducts, e.g. arrangements for mounting ventilators (ventilators per seF04D) | HB | CC | 2D062 | |
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.Air doors (doors in general E06B) | HB | CC | 2D062 | |
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..Devices for automatically opening air doors | HB | CC | 2D062 | |
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.Air partitions; Air locks (dams E21F 17/103; air locks for foundations E02D) [6] | HB | CC | 2D062 | |
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.Shaft covers | HB | CC | 2D062 | |
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.Gravity-flow ventilation (E21F 1/02-E21F 1/16 take precedence) [2] | HB | CC | 2D062 | |