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Patent DE838574C successfully refreshed from Google Patents.
DE838574C
Expired / Lapsed
DE
⏱️ 0.0 years remaining
Exchangeable pen with lead holders that are guided inside the casing and operated by a slide
Assignee: Individual
•
Filing: 1950-12-16
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Granted: 1952-05-08
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Expires: 1970-12-16
Abstract
No abstract record available.
Inventors
- 👤 Bernhard Naegele Jun
Bibliographic Details
Application Number
—
Jurisdiction
DE
Data Source
google_patents
Last Synchronized
2026-11-04 20:32
CPC Classifications
B; B43; B43K; B43K24/00; B43K24/10; B43K24/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE660667C
Cited
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