US2954422A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Telegraphic system delay network
Assignee: TDK Micronas GmbH
•
Filing: 1952-07-29
•
Granted: 1960-09-27
•
Expires: 1972-07-29
Abstract
No abstract record available.
Inventors
- 👤 Miner Walter Adrian
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 10:43
CPC Classifications
H; H04; H04L; H04L25/00; H04L25/02; H04L25/20; H04L25/22
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1535244A
Cited
US1541878A
Cited
US1531598A
Cited
US1673445A
Cited
US2513954A
Cited
US2360857A
Cited
US2349447A
Cited
US2433667A
Cited
US2521623A
Cited
US2534264A
Cited
US2600270A
Cited
US2672556A
Cited
US2612605A
Cited
US2590783A
Cited
US2700067A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-09-27 | 1964-03-28 | 1964-09-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-09-27 | 1968-03-28 | 1968-09-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-09-27 | 1972-03-28 | 1972-09-27 | $7700.00 | Window Closed / Lapsed |