US2773178A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radio receiving circuit for frequency modulation and amplitude modulation bands
Assignee: Hartford National Bank and Trust Co
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Filing: 1952-09-10
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Granted: 1956-12-04
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Expires: 1972-09-10
Abstract
No abstract record available.
Inventors
- 👤 Henri Herman Van Abbe
- 👤 Uitjens Abraham Geer Wilhelmus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 03:07
CPC Classifications
H; H04; H04B; H04B1/00; H04B1/06; H04B1/16; H04B1/26; H03; H03D; H03D5/00; H04B15/00; H04B15/02; H04B15/04; H04B15/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-12-04 | 1960-06-04 | 1960-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-12-04 | 1964-06-04 | 1964-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-12-04 | 1968-06-04 | 1968-12-04 | $7700.00 | Window Closed / Lapsed |