US2864990A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic pilot
Assignee: HILL CUNNINGHAM AUTOMATIC PILO
•
Filing: 1954-09-21
•
Granted: 1958-12-16
•
Expires: 1974-09-21
Abstract
No abstract record available.
Inventors
- 👤 Arthur D Hill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:58
CPC Classifications
G; G05; G05D; G05D1/00; G05D1/02; G05D1/0206
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US507522A
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US774693A
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US1015061A
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US1360694A
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US1378740A
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US2059271A
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US2068065A
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US2221311A
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US2448778A
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US2498223A
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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) | 1961-12-15 | 1962-06-16 | 1962-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-12-15 | 1966-06-16 | 1966-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-12-15 | 1970-06-16 | 1970-12-16 | $7700.00 | Window Closed / Lapsed |