Patent US2870729A successfully refreshed from Google Patents.
US2870729A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control systems
Assignee: Elsag Bailey Inc
•
Filing: 1952-01-10
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Granted: 1959-01-27
•
Expires: 1972-01-10
Abstract
No abstract record available.
Inventors
- 👤 Jack F Shannon
- 👤 Clayton H Barnard
- 👤 Howard C Schink
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:27
CPC Classifications
B; B63; B63G; B63G8/00; B63G8/08; B63G8/10; F; F22; F22B; F22B1/00; F22B1/02; F22B1/16
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-01-26 | 1962-07-28 | 1963-01-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-01-26 | 1966-07-28 | 1967-01-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-01-26 | 1970-07-28 | 1971-01-27 | $7700.00 | Window Closed / Lapsed |