US2498695A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Telegraph receiver
Assignee: International Standard Electric Corp
•
Filing: 1947-04-25
•
Granted: 1950-02-28
•
Expires: 1967-04-25
Abstract
No abstract record available.
Inventors
- 👤 Mcwhirter Eric Malcolm Swift
- 👤 Dunn Roland Harris
- 👤 Lennox Peter William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 16:53
CPC Classifications
G; G11; G11C; G11C11/00; G11C11/21; G11C11/26; G11C11/28; H; H04; H04L; H04L17/00; H04L17/16; H04L17/30; H04L27/00; H04L27/26
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US897662A
Cited
US1068869A
Cited
US2099065A
Cited
GB512827A
Cited
US2412642A
Cited
US2430547A
Cited
US2411441A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-02-27 | 1953-08-29 | 1954-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-02-27 | 1957-08-29 | 1958-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-02-27 | 1961-08-29 | 1962-02-28 | $7700.00 | Window Closed / Lapsed |