US2848900A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radio tuner with vacuum assist
Assignee: Radio Condenser Co
•
Filing: 1953-12-21
•
Granted: 1958-08-26
•
Expires: 1973-12-21
Abstract
No abstract record available.
Inventors
- 👤 John H Teaf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 01:29
CPC Classifications
H; H03; H03J; H03J5/00; H03J5/02; H03J5/04; H03J5/12
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1298226A
Cited
US1524923A
Cited
US1665909A
Cited
US1997575A
Cited
US2177011A
Cited
US2367860A
Cited
US2244092A
Cited
US2659236A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-08-25 | 1962-02-24 | 1962-08-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-08-25 | 1966-02-24 | 1966-08-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-08-25 | 1970-02-24 | 1970-08-26 | $7700.00 | Window Closed / Lapsed |