US2434299A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radio receiver with band-spread control for a number of comparatively narrow frequency bands
Assignee: Hartford National Bank and Trust Co
•
Filing: 1943-03-23
•
Granted: 1948-01-13
•
Expires: 1963-03-23
Abstract
No abstract record available.
Inventors
- 👤 Carel Jan Van Loon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:17
CPC Classifications
H; H03; H03J; H03J3/00; H03J3/02; H03J3/10; H02; H02P; H02P9/00; H02P9/14; H02P9/32
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1658718A
Cited
US2137318A
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US2129026A
Cited
US2062379A
Cited
US2061416A
Cited
US2252100A
Cited
US2309014A
Cited
GB551064A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-01-12 | 1951-07-14 | 1952-01-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-01-12 | 1955-07-14 | 1956-01-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-01-12 | 1959-07-14 | 1960-01-13 | $7700.00 | Window Closed / Lapsed |