Patent US5906628A successfully refreshed from Google Patents.
Patent US3952586A successfully refreshed from Google Patents.
Patent US3508006A successfully refreshed from Google Patents.
Patent US3954011A successfully refreshed from Google Patents.
FR740064A
Expired / Lapsed
FR
⏱️ 0.0 years remaining
Process for obtaining elements used for photoengraving printing, more particularly those employed in intaglio and relief printing processes
Assignee: LAYTHAM
•
Filing: 1932-07-18
•
Granted: 1933-01-20
•
Expires: 1952-07-18
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-10-23 20:19
CPC Classifications
B; B41; B41N; B41N1/00; B41N1/04; B41N1/06
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.