FR561820A
Expired / Lapsed
FR
⏱️ 0.0 years remaining
Apparatus for the manufacture of spiral springs
Assignee: Albert-Ferdinand Herckelbout
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Filing: 1923-02-05
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Granted: 1923-10-29
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Expires: 1943-02-05
Abstract
No abstract record available.
Inventors
- 👤 Albert-Ferdinand Herckelbout
Bibliographic Details
Application Number
—
Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-11-06 05:58
CPC Classifications
B; B21; B21F; B21F3/00; B21F3/02; B21F3/06; B21F11/00
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References Cited (Backward Citations)
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