US2912506A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Communication system
Assignee: TDK Micronas GmbH
•
Filing: 1955-03-09
•
Granted: 1959-11-10
•
Expires: 1975-03-09
Abstract
No abstract record available.
Inventors
- 👤 Robert W Hughes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:07
CPC Classifications
H; H04; H04B; H04B14/00; H04B14/02; H04B14/026; H04B1/00; H04B1/66
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2541076A
Cited
US2454792A
Cited
US2445775A
Cited
US2506770A
Cited
US2529564A
Cited
US2710915A
Cited
US2828417A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-11-09 | 1963-05-11 | 1963-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-11-09 | 1967-05-11 | 1967-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-11-09 | 1971-05-11 | 1971-11-10 | $7700.00 | Window Closed / Lapsed |