DE448798C
Expired / Lapsed
DE
⏱️ 0.0 years remaining
Easel card file in which rotatable or spring-mounted, plate-like structures with one or more card supports on the edge serve as card holders
Assignee: ROBERT MARTIN DIPL ING
•
Filing: 1926-08-26
•
Granted: 1928-01-11
•
Expires: 1946-08-26
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
DE
Data Source
google_patents
Last Synchronized
2026-10-30 20:54
CPC Classifications
B; B42; B42F; B42F17/00; B42F17/18
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.