US2471728A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control system
Assignee: Elsag Bailey Inc
•
Filing: 1942-06-27
•
Granted: 1949-05-31
•
Expires: 1962-06-27
Abstract
No abstract record available.
Inventors
- 👤 Paul S Dickey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:51
CPC Classifications
F; F22; F22G; F22G5/00; F22G5/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1095767A
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US1250832A
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US1359042A
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US1423764A
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US1619253A
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US1748634A
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US2131058A
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US2170345A
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US2247884A
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US2243862A
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US2292291A
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US2298700A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-05-30 | 1952-11-29 | 1953-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-05-30 | 1956-11-29 | 1957-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-05-30 | 1960-11-29 | 1961-05-31 | $7700.00 | Window Closed / Lapsed |