US2906867A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Carrier operated relay circuit
Assignee: TELE DYNAMICS Inc
•
Filing: 1955-11-04
•
Granted: 1959-09-29
•
Expires: 1975-11-04
Abstract
No abstract record available.
Inventors
- 👤 Robert M Spiegel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 07:21
CPC Classifications
H; H04; H04L; H04L27/00; H04L27/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2115813A
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US2023458A
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US2282092A
Cited
US2447564A
Cited
US2400948A
Cited
US2589711A
Cited
US2751493A
Cited
US2859338A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-09-28 | 1963-03-30 | 1963-09-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-09-28 | 1967-03-30 | 1967-09-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-09-28 | 1971-03-30 | 1971-09-29 | $7700.00 | Window Closed / Lapsed |