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Patent FR490423A successfully refreshed from Google Patents.
FR490423A
Expired / Lapsed
FR
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Improvements in ways to increase the duration of writing nibs
Assignee: Individual
•
Filing: 1918-06-10
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Granted: 1919-04-22
•
Expires: 1938-06-10
Abstract
No abstract record available.
Inventors
- 👤 John James
Bibliographic Details
Application Number
—
Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-10-30 18:10
CPC Classifications
B; B43; B43K; B43K1/00; B43K1/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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