FR573873A
Expired / Lapsed
FR
⏱️ 0.0 years remaining
Metal duct with a large radiant surface and its manufacturing process
Assignee: Paul Gregoire
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Filing: 1923-11-28
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Granted: 1924-07-02
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Expires: 1943-11-28
Abstract
No abstract record available.
Inventors
- 👤 Paul Gregoire
Bibliographic Details
Application Number
—
Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-11-03 20:09
CPC Classifications
B; B21; B21C; B21C37/00; B21C37/06; B21C37/15; B21C37/20; B21C37/205
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