Patent US2906358A successfully refreshed from Google Patents.
Patent US4586040A successfully refreshed from Google Patents.
Patent US2641645A successfully refreshed from Google Patents.
US2641645A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Phase shifting or delay network
Assignee: RCA Corp
•
Filing: 1949-11-16
•
Granted: 1953-06-09
•
Expires: 1969-11-16
Abstract
No abstract record available.
Inventors
- 👤 Artzt Maurice
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 08:55
CPC Classifications
H; H03; H03H; H03H7/00; H03H7/18; H03H7/20; H03H7/30; H03H7/32; H03H7/325
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1956-06-08 | 1956-12-08 | 1957-06-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-06-08 | 1960-12-08 | 1961-06-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-06-08 | 1964-12-08 | 1965-06-09 | $7700.00 | Window Closed / Lapsed |