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Patent US1863409A successfully refreshed from Google Patents.
US1863409A
Expired / Lapsed
US
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Radio receiving circuits
Assignee: General Electric Co
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Filing: 1927-09-12
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Granted: 1932-06-14
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Expires: 1947-09-12
Abstract
No abstract record available.
Inventors
- 👤 Thomas H Kinman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:03
CPC Classifications
H; H04; H04B; H04B1/00; H04B1/06; H04B1/16; H04B1/18; H03; H03J; H03J5/00; H03J5/24; H03J5/242
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1935-06-14 | 1935-12-14 | 1936-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1939-06-14 | 1939-12-14 | 1940-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1943-06-14 | 1943-12-14 | 1944-06-14 | $7700.00 | Window Closed / Lapsed |