B21B 15/02
In which work is subjected to permanent internal twisting
Official title: in which work is subjected to permanent internal twisting, e.g. for producing reinforcement bars for concrete
B21B15/02 (In which work is subjected to permanent internal twisting) appears on 1 US grants and 0 published applications in this corpus.
Search patents in B21B- Granted patents
- 1
- Published applications
- 0
- Assignees
- 2
- Inventors
- 4
- Latest grant
- 11 Oct 1988
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| Year | Granted patents | Published applications |
|---|---|---|
| 1988 | 1 | 0 |
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