Patent US4605885A successfully refreshed from Google Patents.
DE706640C
Expired / Lapsed
DE
⏱️ 0.0 years remaining
Photographic enlarger
Assignee: DURST FABBRICA MACCHIEN ED APP
•
Filing: 1939-01-28
•
Granted: 1941-05-31
•
Expires: 1959-01-28
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
DE
Data Source
google_patents
Last Synchronized
2026-11-01 22:29
CPC Classifications
G; G03; G03B; G03B27/00; G03B27/32; G03B27/34; G03B27/36; G03B27/40
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.