US2498689A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Arrangement for modulating continuous waves
Assignee: International Standard Electric Corp
•
Filing: 1946-01-05
•
Granted: 1950-02-28
•
Expires: 1966-01-05
Abstract
No abstract record available.
Inventors
- 👤 Levy Maurice Moise
- 👤 Rattue Edward Arthur
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:39
CPC Classifications
H; H04; H04L; H04L27/00; H04L27/02; H04L27/04; H03; H03K; H03K3/00; H03K3/78; H03K7/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2419292A
Cited
US1507016A
Cited
US1948103A
Cited
US2036078A
Cited
US2338395A
Cited
US2431179A
Cited
US2435262A
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 |