JPS598882B2
Expired / Lapsed
JP
⏱️ 0.0 years remaining
Audio information recording method
Assignee: Sanyo Electric Co Ltd
•
Filing: 1974-10-17
•
Granted: —
•
Expires: 1994-10-17
Abstract
No abstract record available.
Inventors
- 👤 盛弘 久保
Bibliographic Details
Application Number
—
Jurisdiction
JP
Data Source
google_patents
Last Synchronized
2026-10-30 17:15
CPC Classifications
—
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.