E21D 15/515
Particular fluids not covered by any chemical subdivision
Official title: {Particular fluids not covered by any chemical subdivision}
E21D15/515 (Particular fluids not covered by any chemical subdivision) appears on 1 US grants and 0 published applications in this corpus.
Search patents in E21D- Granted patents
- 1
- Published applications
- 0
- Assignees
- 1
- Inventors
- 1
- Latest grant
- 24 Mar 1981
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1981 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
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