FR677967A
Expired / Lapsed
FR
⏱️ 0.0 years remaining
A method of making cut-resistant irons, such as press-nut irons, irons for automatic lathe machining, screw irons and the like
Assignee: Friedrich Borggrafe
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Filing: 1929-07-06
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Granted: 1930-03-17
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Expires: 1949-07-06
Abstract
No abstract record available.
Inventors
- 👤 Friedrich Borggrafe
Bibliographic Details
Application Number
—
Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-11-04 17:27
CPC Classifications
C; C21; C21C; C21C5/00; C21C5/28
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