patent · US9791217B2
Energy storage arrangement having tunnels configured as an inner helix and as an outer helix
17 October 2017
Indexed reference — no copy held
This patent is cited by material in the archive, so it is indexed here by number, title and inventor. The archive holds no copy of its text.
Provenance
- Collection
- Patents citing this work
- Patent office record
- patents.google.com →
- Source
- Google Patents citing-documents table
- Assignee
- Skanska Sverige Ab
- Published
- 2017-10-17