Patent US3048840A successfully refreshed from Google Patents.
US3048840A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Communication system
Assignee: TDK Micronas GmbH
•
Filing: 1956-03-06
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Granted: 1962-08-07
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Expires: 1976-03-06
Abstract
No abstract record available.
Inventors
- 👤 Robert C Ferrar
- 👤 Heyward A French
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:51
CPC Classifications
H; H04; H04B; H04B1/00; H04B1/74; H03; H03F; H03F1/00; H03F1/52; H03F1/54
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) | 1965-08-06 | 1966-02-05 | 1966-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-08-06 | 1970-02-05 | 1970-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-08-06 | 1974-02-05 | 1974-08-07 | $7700.00 | Window Closed / Lapsed |