US2623200A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Servo-control mechanism
Assignee: Nortel Networks Ltd
•
Filing: 1949-05-13
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Granted: 1952-12-23
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Expires: 1969-05-13
Abstract
No abstract record available.
Inventors
- 👤 Douglas J Watson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:31
CPC Classifications
G; G05; G05B; G05B11/00; G05B11/01; G05B11/012; G05B11/013
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2058114A
Cited
US2404832A
Cited
US2303654A
Cited
US2385641A
Cited
US2446607A
Cited
US2479817A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-12-23 | 1956-06-23 | 1956-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-12-23 | 1960-06-23 | 1960-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-12-23 | 1964-06-23 | 1964-12-23 | $7700.00 | Window Closed / Lapsed |