US2963682A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Keyed modulation system for modulating non-time dependent signals in proportion to real time
Assignee: Jersey Production Research Co
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Filing: 1957-06-06
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Granted: 1960-12-06
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Expires: 1977-06-06
Abstract
No abstract record available.
Inventors
- 👤 John H Sasseen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:25
CPC Classifications
G; G01; G01V; G01V3/00; G01V3/18; G01V3/34
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2651027A
Cited
US2789270A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-12-06 | 1964-06-06 | 1964-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-12-06 | 1968-06-06 | 1968-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-12-06 | 1972-06-06 | 1972-12-06 | $7700.00 | Window Closed / Lapsed |