US2841701A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Diversity radio telegraph system
Assignee: International Standard Electric Corp
•
Filing: 1953-05-27
•
Granted: 1958-07-01
•
Expires: 1973-05-27
Abstract
No abstract record available.
Inventors
- 👤 Terry Victor John
- 👤 Hargreaves Thomas Fred Stanley
- 👤 Prior Hector Thomas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 13:03
CPC Classifications
H; H03; H03K; H03K9/00; H03K9/02; H04; H04B; H04B3/00; H04B3/02; H04B3/04; H04B3/14; H04B3/142; H04L; H04L1/00; H04L1/02; H04L25/00; H04L25/02; H04L25/03; H04L25/03878; H04L27/00; H04L27/02; H04L27/06
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2282526A
Cited
US2384456A
Cited
US2510889A
Cited
US2619587A
Cited
US2620437A
Cited
US2725467A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-06-30 | 1961-12-30 | 1962-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-30 | 1965-12-30 | 1966-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-30 | 1969-12-30 | 1970-07-01 | $7700.00 | Window Closed / Lapsed |