Patent US3029400A successfully refreshed from Google Patents.
US3029400A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Color television bandpass network utilizing a cancellation trap
Assignee: RCA Corp
•
Filing: 1954-04-19
•
Granted: 1962-04-10
•
Expires: 1974-04-19
Abstract
No abstract record available.
Inventors
- 👤 Morris D Nelson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:20
CPC Classifications
H; H03; H03H; H03H7/00; H03H7/01; H03H7/0153; H03H7/0161; H04; H04N; H04N9/00; H04N9/64; H04N9/647
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2733414A
Cited
US1759952A
Cited
US1890543A
Cited
FR710535A
Cited
US2085952A
Cited
US2204702A
Cited
US2619536A
Cited
US2707730A
Cited
US2752575A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-04-09 | 1965-10-09 | 1966-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-04-09 | 1969-10-09 | 1970-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-04-09 | 1973-10-09 | 1974-04-10 | $7700.00 | Window Closed / Lapsed |