E21D 15/303
By means of granular material
Official title: {by means of granular material (supporting by means of granular material E21D15/18)}
E21D15/303 (By means of granular material) appears on 2 US grants and 2 published applications in this corpus.
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- Published applications
- 2
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- 2
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- 4
- Latest grant
- 3 Nov 2020
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| Year | Granted patents | Published applications |
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| 2019 | 0 | 2 |
| 2020 | 2 | 0 |
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