US2417844A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radio receiver
Assignee: International Standard Electric Corp
•
Filing: 1943-05-08
•
Granted: 1947-03-25
•
Expires: 1963-05-08
Abstract
No abstract record available.
Inventors
- 👤 Scully Charles Thomas
- 👤 Houghton Leslie Wilfred
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 02:07
CPC Classifications
H; H03; H03F; H03F1/00; H03F1/52; H03F1/54; H03F1/548; H03G; H03G3/00; H03G3/20; H03G3/22
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2012433A
Cited
US2171638A
Cited
US2084135A
Cited
US2182329A
Cited
GB502562A
Cited
US2271208A
Cited
US2298192A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-03-24 | 1950-09-23 | 1951-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-03-24 | 1954-09-23 | 1955-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-03-24 | 1958-09-23 | 1959-03-25 | $7700.00 | Window Closed / Lapsed |