Patent US2820691A successfully refreshed from Google Patents.
Patent CH358714A successfully refreshed from Google Patents.
CH358714A
Expired / Lapsed
CH
⏱️ 0.0 years remaining
Ink cartridge for ballpoint pens
Assignee: Ray Frederick
•
Filing: 1957-11-26
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Granted: —
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Expires: 1977-11-26
Abstract
No abstract record available.
Inventors
- 👤 Ray Frederick
Bibliographic Details
Application Number
—
Jurisdiction
CH
Data Source
google_patents
Last Synchronized
2026-11-04 13:52
CPC Classifications
B; B43; B43K; B43K7/00; B43K7/02; B43K7/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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