- All sections
- E - Fixed constructions
- E02D - Foundationsexcavationsembankmentsunderground or underwater structures
- E02D 29/045 - Underground structures, e.g. tunnels or galleries, built in the open air or by methods involving disturbance of the ground surface all along the location lineMethods of making them
Patent holdings for IPC class E02D 29/045
Total number of patents in this class: 213
10-year publication summary
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16
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23
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29
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26
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16
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18
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13
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21
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11
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10
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