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FR1008033A Expired / Lapsed FR ⏱️ 0.0 years remaining

Improvements to electronic optical devices

Assignee: Secretaire D Etat A La Mari Le
•
Filing: 1950-01-06
•
Granted: 1952-05-13
•
Expires: 1970-01-06
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Abstract

No abstract record available.

Inventors

  • 👤 Secretaire D Etat A La Mari Le
  • 👤 Werner Veith

Bibliographic Details

Application Number —
Jurisdiction FR
Data Source google_patents
Last Synchronized 2026-11-04 07:01
CPC Classifications
H; H01; H01J; H01J29/00; H01J29/46; H01J29/58; H01J29/62; H01J29/622; H01J29/624

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