Patent DE392014C successfully refreshed from Google Patents.
Patent FR67481E successfully refreshed from Google Patents.
FR67481E
Expired / Lapsed
FR
⏱️ 0.0 years remaining
Magnetic tape drive device
Assignee: International Standard Electric Corp
•
Filing: 1954-10-13
•
Granted: 1958-03-13
•
Expires: 1974-10-13
Abstract
No abstract record available.
Inventors
- 👤 Willy Hortense Prospe Pouliart
- 👤 Franciscus Marcel Michiels
Bibliographic Details
Application Number
—
Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-10-29 13:25
CPC Classifications
G; G11; G11B; G11B15/00; G11B15/60; G11B15/62; G11B15/64
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.