US2948258A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Signal device for tape recorders
Assignee: Individual
•
Filing: 1958-07-30
•
Granted: 1960-08-09
•
Expires: 1978-07-30
Abstract
No abstract record available.
Inventors
- 👤 Walter P Koechel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:25
CPC Classifications
G; G11; G11B; G11B27/00; G11B27/10; G11B27/34; G09; G09B; G09B21/00; G09B21/001; G09B21/006; G11B15/00; G11B15/02; G11B15/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-08-09 | 1964-02-08 | 1964-08-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-08-09 | 1968-02-08 | 1968-08-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-08-09 | 1972-02-08 | 1972-08-09 | $7700.00 | Window Closed / Lapsed |