Patent DE660667C successfully refreshed from Google Patents.
DE660667C
Expired / Lapsed
DE
⏱️ 0.0 years remaining
Exchangeable pen with lead carriers that can be brought into the writing position by sliding buttons and fixed in notches
Assignee: CARL EMIL RUF FA
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Filing: 1937-03-19
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Granted: 1938-05-31
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Expires: 1957-03-19
Abstract
No abstract record available.
Inventors
- 👤 Leonhard Neidlein
- 👤 Robert Roehm
Bibliographic Details
Application Number
—
Jurisdiction
DE
Data Source
google_patents
Last Synchronized
2026-11-05 13:33
CPC Classifications
B; B43; B43K; B43K24/00; B43K24/10; B43K24/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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