US2607004A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radio transmission system
Assignee: Individual
•
Filing: 1947-09-12
•
Granted: 1952-08-12
•
Expires: 1967-09-12
Abstract
No abstract record available.
Inventors
- 👤 Donald B Harris
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 16:57
CPC Classifications
H; H04; H04B; H04B1/00; H04B1/38; H04B1/40
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-08-12 | 1956-02-11 | 1956-08-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-08-12 | 1960-02-11 | 1960-08-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-08-12 | 1964-02-11 | 1964-08-12 | $7700.00 | Window Closed / Lapsed |