CH180982A
Expired / Lapsed
CH
⏱️ 0.0 years remaining
Process for the production of writing chalk with high break resistance.
Assignee: Jeck Edgar
•
Filing: 1935-01-26
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Granted: —
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Expires: 1955-01-26
Abstract
No abstract record available.
Inventors
- 👤 Jeck Edgar
Bibliographic Details
Application Number
—
Jurisdiction
CH
Data Source
google_patents
Last Synchronized
2026-11-01 09:02
CPC Classifications
B; B43; B43K; B43K19/00; B43K19/003
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References Cited (Backward Citations)
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