CH290640A
Expired / Lapsed
CH
⏱️ 0.0 years remaining
Process for the production of pole shoe units for magnetic heads with exchangeable pole shoes.
Assignee: Daniel Tefi Apparatebau
•
Filing: 1951-05-18
•
Granted: —
•
Expires: 1971-05-18
Abstract
No abstract record available.
Inventors
- 👤 Tefi-Apparatebau Dr Daniel K G
Bibliographic Details
Application Number
—
Jurisdiction
CH
Data Source
google_patents
Last Synchronized
2026-10-27 18:28
CPC Classifications
G; G11; G11B; G11B5/00; G11B5/127; G11B5/147; G11B5/1475; G11B5/187
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.