US2937342A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Phase modulation or detection circuit
Assignee: Unisys Corp
•
Filing: 1953-12-28
•
Granted: 1960-05-17
•
Expires: 1973-12-28
Abstract
No abstract record available.
Inventors
- 👤 Francis C Wellman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:34
CPC Classifications
H; H03; H03C; H03C3/00; H03C3/10; H03C3/24; H03C3/245; H03D; H03D3/00; H03D3/02; H03D3/06; H03D3/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1933627A
Cited
US2502095A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-05-17 | 1963-11-16 | 1964-05-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-05-17 | 1967-11-16 | 1968-05-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-05-17 | 1971-11-16 | 1972-05-17 | $7700.00 | Window Closed / Lapsed |