Patent US2764738A successfully refreshed from Google Patents.
US2764738A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Modulation corrector
Assignee: Individual
•
Filing: 1952-12-22
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Granted: 1956-09-25
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Expires: 1972-12-22
Abstract
No abstract record available.
Inventors
- 👤 John A Bush
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:09
CPC Classifications
H; H03; H03C; H03C1/00; H03C1/02; H03C1/06; H03C3/00; H03C3/02; H03C3/08
Claims Analysis
Total Claims: 0
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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) | 1959-09-25 | 1960-03-26 | 1960-09-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-09-25 | 1964-03-26 | 1964-09-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-09-25 | 1968-03-26 | 1968-09-25 | $7700.00 | Window Closed / Lapsed |