Patent US2969805A successfully refreshed from Google Patents.
US2969805A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Surge controller
Assignee: Fairchild Engine and Airplane Corp
•
Filing: 1956-10-01
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Granted: 1961-01-31
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Expires: 1976-10-01
Abstract
No abstract record available.
Inventors
- 👤 David U Hunter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 16:37
CPC Classifications
F; F04; F04D; F04D27/00; F04D27/02; F04D27/0284; F04D27/0207; F16; F16K; F16K31/00; F16K31/12; F16K31/36; F16K31/365; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7758; Y10T137/7762; Y10T137/7764
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2764104A
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US2604109A
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Cited
US2813672A
Cited
US2861585A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-01-31 | 1964-08-01 | 1965-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-01-31 | 1968-08-01 | 1969-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-01-31 | 1972-08-01 | 1973-01-31 | $7700.00 | Window Closed / Lapsed |