US2995691A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric motor control system for navigation programming
Assignee: International Business Machines Corp
•
Filing: 1954-12-28
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Granted: 1961-08-08
•
Expires: 1974-12-28
Abstract
No abstract record available.
Inventors
- 👤 George F Kennard
- 👤 Marcy Henry Tyler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 04:03
CPC Classifications
G; G05; G05D; G05D3/00; G05D3/12; G05D3/125; G05D3/127
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2471843A
Cited
US2762123A
Cited
US2566972A
Cited
US2537427A
Cited
US2710934A
Cited
US2741732A
Cited
US2792545A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-08-07 | 1965-02-06 | 1965-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-08-07 | 1969-02-06 | 1969-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-08-07 | 1973-02-06 | 1973-08-08 | $7700.00 | Window Closed / Lapsed |