US2794956A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Frequency modulation system
Assignee: Individual
•
Filing: 1946-08-14
•
Granted: 1957-06-04
•
Expires: 1966-08-14
Abstract
No abstract record available.
Inventors
- 👤 Fox Benjamin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 12:11
CPC Classifications
H; H03; H03C; H03C3/00; H03C3/10; H03C3/12; H03C3/14; H03C3/02; H03C3/09
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1629685A
Cited
US2018820A
Cited
US2279659A
Cited
US2250104A
Cited
US2322588A
Cited
US2475779A
Cited
US2335934A
Cited
US2394393A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-06-03 | 1960-12-03 | 1961-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-06-03 | 1964-12-03 | 1965-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-06-03 | 1968-12-03 | 1969-06-04 | $7700.00 | Window Closed / Lapsed |