US2865637A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sound recording and reproducing apparatus
Assignee: Dictaphone Corp
•
Filing: 1947-08-07
•
Granted: 1958-12-23
•
Expires: 1967-08-07
Abstract
No abstract record available.
Inventors
- 👤 Frederick W Roberts
- 👤 Edward S Gillette
- 👤 John A Duntze
- 👤 Arthur W Skoog
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 08:41
CPC Classifications
G; G11; G11B; G11B5/00; G11B5/004
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-12-22 | 1962-06-23 | 1962-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-12-22 | 1966-06-23 | 1966-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-12-22 | 1970-06-23 | 1970-12-23 | $7700.00 | Window Closed / Lapsed |