US2563355A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Code transmitter
Assignee: Individual
•
Filing: 1947-04-07
•
Granted: 1951-08-07
•
Expires: 1967-04-07
Abstract
No abstract record available.
Inventors
- 👤 Donald B Murray
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 18:04
CPC Classifications
H; H04; H04L; H04L15/00; H04L15/04; H04L15/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1566476A
Cited
US876069A
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US990485A
Cited
US1164737A
Cited
GB195100A
Cited
US1749444A
Cited
US1737024A
Cited
US1965121A
Cited
US1954170A
Cited
US2352031A
Cited
US2284024A
Cited
US2341222A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-08-06 | 1955-02-05 | 1955-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-08-06 | 1959-02-05 | 1959-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-08-06 | 1963-02-05 | 1963-08-07 | $7700.00 | Window Closed / Lapsed |