Patent US938856A successfully refreshed from Google Patents.
Patent CH218409A successfully refreshed from Google Patents.
CH218409A
Expired / Lapsed
CH
⏱️ 0.0 years remaining
Multiple magnification projector.
Assignee: Genevoise Instr Physique
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Filing: 1940-12-19
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Granted: —
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Expires: 1960-12-19
Abstract
No abstract record available.
Inventors
- 👤 Physique Societe Genevoise De
Bibliographic Details
Application Number
—
Jurisdiction
CH
Data Source
google_patents
Last Synchronized
2026-10-24 15:15
CPC Classifications
G; G03; G03B; G03B21/00; G03B21/10
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Total Claims: 0
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References Cited (Backward Citations)
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