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E21D 9/00

Tunnels or galleries, with or without linings; Methods or apparatus for making thereof ; Layout of tunnels or galleries

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Edits on 16 Mar, 2022
"update inverses"
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Golden AI
edited on 16 Mar, 2022
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E21D 9/12
"update inverses"
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Golden AI
edited on 16 Mar, 2022
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E21D 9/14
"Entity importer update"
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Golden AI
edited on 16 Mar, 2022
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E21D
Edits on 5 Mar, 2022
"update inverses"
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Golden AI
edited on 5 Mar, 2022
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E21D 9/10
"Created via: Entity Importer"
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Golden AI
created this topic on 5 Mar, 2022
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 E21D 9/00

Tunnels or galleries, with or without linings; Methods or apparatus for making thereof ; Layout of tunnels or galleries

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Is a
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Patent classification
Classification Type
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Cooperative Patent Classification
Website
http://data.epo.org/linked-data/def/cpc/E21D9-00

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