Patent FR933540A successfully refreshed from Google Patents.
← Back to Patent Explorer
FR933540A Expired / Lapsed FR ⏱️ 0.0 years remaining

Optical device for the projection of photo or cinematographic images with a view to additive trichrome synthesis

Assignee: Arthur Nepokoitchitzky
•
Filing: 1946-09-07
•
Granted: 1948-04-23
•
Expires: 1966-09-07
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

No abstract record available.

Inventors

  • 👤 Arthur Nepokoitchitzky
  • 👤 Pierre Lefebure

Bibliographic Details

Application Number —
Jurisdiction FR
Data Source google_patents
Last Synchronized 2026-11-02 20:06
CPC Classifications
G; G02; G02B; G02B27/00; G02B27/10; G02B27/1006; G02B27/102

Claims Analysis

Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.

References Cited (Backward Citations)

No citation records indexed.

USPTO Annuity & Maintenance Windows

Maintenance schedule is calculated for granted US utility patents.

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag