US2552884A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oscilloscope system
Assignee: Western Union Telegraph Co
•
Filing: 1947-01-21
•
Granted: 1951-05-15
•
Expires: 1967-01-21
Abstract
No abstract record available.
Inventors
- 👤 William D Cannon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 04:48
CPC Classifications
H; H03; H03K; H03K4/00; H03K4/06; H03K4/08; H03K4/10; H03K4/12
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2085100A
Cited
US2180365A
Cited
US2174234A
Cited
US2286894A
Cited
US2315040A
Cited
US2473915A
Cited
US2382243A
Cited
US2407898A
Cited
US2410745A
Cited
US2394891A
Cited
US2426256A
Cited
US2452213A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-05-14 | 1954-11-13 | 1955-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-05-14 | 1958-11-13 | 1959-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-05-14 | 1962-11-13 | 1963-05-15 | $7700.00 | Window Closed / Lapsed |