FR1097703A
Expired / Lapsed
FR
⏱️ 0.0 years remaining
Improvements in the preparation of tetracycline and its salts
Assignee: Wyeth Holdings LLC
•
Filing: 1954-03-04
•
Granted: 1955-07-08
•
Expires: 1974-03-04
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-11-03 18:16
CPC Classifications
C; C07; C07C; C07C237/00; C07C237/24; C07C237/26; C07C231/00; C07C231/12; C07C2603/00; C07C2603/02; C07C2603/40; C07C2603/42; C07C2603/44; C07C2603/46
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.