US2630562A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Data encoding system
Assignee: Individual
•
Filing: 1949-04-25
•
Granted: 1953-03-03
•
Expires: 1969-04-25
Abstract
No abstract record available.
Inventors
- 👤 Johnson Eric Arthur
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:52
CPC Classifications
H; H03; H03M; H03M1/00; H03M1/10; H03M1/1009
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE287274C
Cited
US2207743A
Cited
GB499900A
Cited
US2241548A
Cited
US2397604A
Cited
US2435257A
Cited
US2502837A
Cited
US2496585A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-03-02 | 1956-09-01 | 1957-03-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-03-02 | 1960-09-01 | 1961-03-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-03-02 | 1964-09-01 | 1965-03-03 | $7700.00 | Window Closed / Lapsed |