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CH280883A
Expired / Lapsed
CH
⏱️ 0.0 years remaining
Optical shielding device.
Assignee: Welter Otto
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Filing: 1949-12-17
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Granted: —
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Expires: 1969-12-17
Abstract
No abstract record available.
Inventors
- 👤 Welter Otto
Bibliographic Details
Application Number
—
Jurisdiction
CH
Data Source
google_patents
Last Synchronized
2026-10-29 11:50
CPC Classifications
G; G02; G02C; G02C7/00; G02C7/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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