Patent FR875310A successfully refreshed from Google Patents.
FR875310A
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Safety envelope, process and machine used to manufacture it
Assignee: Alfred Winkler
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Filing: 1941-09-15
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Granted: 1942-09-16
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Expires: 1961-09-15
Abstract
No abstract record available.
Inventors
- 👤 Alfred Winkler
- 👤 Max Dunnebier
Bibliographic Details
Application Number
—
Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-11-09 00:17
CPC Classifications
B; B65; B65D; B65D27/00; B65D27/12; B65D27/30; B31; B31B; B31B70/00; B31B2155/00; B31B2155/002; B31B2160/00; B31B2160/10; B31B2160/102
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References Cited (Backward Citations)
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