US2856525A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pulse shaper
Assignee: Underwood Corp
•
Filing: 1954-07-09
•
Granted: 1958-10-14
•
Expires: 1974-07-09
Abstract
No abstract record available.
Inventors
- 👤 Lubkin Samuel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:49
CPC Classifications
H; H03; H03K; H03K5/00; H03K5/01
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1315539A
Cited
US2408078A
Cited
US2438927A
Cited
US2448718A
Cited
US2455618A
Cited
US2537589A
Cited
US2654028A
Cited
US2557729A
Cited
US2717999A
Cited
US2648766A
Cited
US2657258A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-10-13 | 1962-04-14 | 1962-10-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-10-13 | 1966-04-14 | 1966-10-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-10-13 | 1970-04-14 | 1970-10-14 | $7700.00 | Window Closed / Lapsed |