US2587741A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pulse shaping circuit
Assignee: Individual
•
Filing: 1948-12-28
•
Granted: 1952-03-04
•
Expires: 1968-12-28
Abstract
No abstract record available.
Inventors
- 👤 Libois Louis-Joseph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:47
CPC Classifications
H; H04; H04B; H04B3/00; H04B3/02; H04B3/04; H03; H03K; H03K5/00; H03K5/01; H03K5/04; H03K5/06; H04B1/00; H04B1/62; H04J; H04J3/00; H04J3/02; H04J3/06; H04J3/10
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) | 1955-03-04 | 1955-09-03 | 1956-03-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-03-04 | 1959-09-03 | 1960-03-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-03-04 | 1963-09-03 | 1964-03-04 | $7700.00 | Window Closed / Lapsed |