US2617038A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ultrahigh-frequency device
Assignee: Individual
•
Filing: 1943-06-23
•
Granted: 1952-11-04
•
Expires: 1963-06-23
Abstract
No abstract record available.
Inventors
- 👤 Carl M Russell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:54
CPC Classifications
H; H03; H03F; H03F3/00; H03F3/54; H03B; H03B5/00; H03B5/18; H03B5/1817; H03B5/1835
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2135672A
Cited
US2223835A
Cited
US2228939A
Cited
US2272062A
Cited
US2310695A
Cited
US2284405A
Cited
US2333295A
Cited
US2408355A
Cited
US2416315A
Cited
US2427558A
Cited
US2416080A
Cited
US2411424A
Cited
US2421591A
Cited
US2424089A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-11-04 | 1956-05-05 | 1956-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-11-04 | 1960-05-05 | 1960-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-11-04 | 1964-05-05 | 1964-11-04 | $7700.00 | Window Closed / Lapsed |