Patent US2632803A successfully refreshed from Google Patents.
US2632803A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Signal receiver coupling network
Assignee: Zenith Electronics LLC
•
Filing: 1948-11-10
•
Granted: 1953-03-24
•
Expires: 1968-11-10
Abstract
No abstract record available.
Inventors
- 👤 Cotsworth Albert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:13
CPC Classifications
H; H03; H03H; H03H7/00; H03H7/01; H03H7/0153; H03H7/0161; H03H7/17; H03H7/1716; H03H7/1733; H03H7/1741; H03H7/1775
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1928720A
Cited
US2088229A
Cited
US2045910A
Cited
US2152823A
Cited
US2205075A
Cited
US2282113A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-03-23 | 1956-09-22 | 1957-03-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-03-23 | 1960-09-22 | 1961-03-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-03-23 | 1964-09-22 | 1965-03-24 | $7700.00 | Window Closed / Lapsed |