Patent US2940056A successfully refreshed from Google Patents.
US2940056A
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US
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Modulator and modulation system
Assignee: General Electric Co
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Filing: 1956-06-01
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Granted: 1960-06-07
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Expires: 1976-06-01
Abstract
No abstract record available.
Inventors
- 👤 Donald E Norgaard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 11:47
CPC Classifications
H; H03; H03C; H03C1/00; H03C1/52
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1673002A
Cited
US1550660A
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US2379484A
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US2478023A
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US2520621A
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US2564471A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-06-07 | 1963-12-07 | 1964-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-06-07 | 1967-12-07 | 1968-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-06-07 | 1971-12-07 | 1972-06-07 | $7700.00 | Window Closed / Lapsed |