← Back to Patent Explorer
DE440090C Expired / Lapsed DE ⏱️ 0.0 years remaining

Process for the production of photographs which, instead of the blackened silver of the black and white silver picture, have color solutions or solutions of other substances

Assignee: Individual
•
Filing: 1925-03-28
•
Granted: 1927-11-10
•
Expires: 1945-03-28
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

No abstract record available.

Inventors

No inventors recorded.

Bibliographic Details

Application Number —
Jurisdiction DE
Data Source google_patents
Last Synchronized 2026-11-09 06:00
CPC Classifications
G; G03; G03C; G03C5/00; G03C5/26; G03C5/40; G03C5/48

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