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FR1003366A Expired / Lapsed FR ⏱️ 0.0 years remaining

Method for increasing the scattering of light through an opening and material used therefor

Assignee: Edouard-Henri-Gustav Delobel
•
Filing: 1949-12-19
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Granted: 1952-03-17
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Expires: 1969-12-19
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Abstract

No abstract record available.

Inventors

  • 👤 Edouard-Henri-Gustav Delobel

Bibliographic Details

Application Number —
Jurisdiction FR
Data Source google_patents
Last Synchronized 2026-11-02 22:09
CPC Classifications
E; E04; E04F; E04F10/00; E04F10/02

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