Patent FR1406950A successfully refreshed from Google Patents.
Patent US3946870A successfully refreshed from Google Patents.
Patent CH59158A successfully refreshed from Google Patents.
CH59158A
Expired / Lapsed
CH
⏱️ 0.0 years remaining
Process for preparing a developing dye
Assignee: Farbenfab Vorm Bayer F & Co
•
Filing: 1912-03-21
•
Granted: —
•
Expires: 1932-03-21
Abstract
No abstract record available.
Inventors
- 👤 Farbenfabriken Vorm Friedr Co
Bibliographic Details
Application Number
—
Jurisdiction
CH
Data Source
google_patents
Last Synchronized
2026-11-01 22:38
CPC Classifications
C; C09; C09B; C09B35/00; C09B35/02; C09B35/039; C09B35/205; C09B35/215
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.