Patent US3508561A successfully refreshed from Google Patents.
US3508561A
Expired / Lapsed
US
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Method of and means for controlling fluid flows
Assignee: Lockheed Martin Corp
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Filing: 1967-03-20
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Granted: 1970-04-28
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Expires: 1987-03-20
Abstract
No abstract record available.
Inventors
- 👤 Joseph J Cornish
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:44
CPC Classifications
F; F02; F02K; F02K1/00; F02K1/46; F15; F15D; F15D1/00; F15D1/0015; Y; Y02; Y02T; Y02T50/00; Y02T50/60; Y10; Y10T; Y10T137/00; Y10T137/0318; Y10T137/0391; Y10T137/206; Y10T137/2087
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2894703A
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US2841182A
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US3105520A
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US3000401A
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US3182674A
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US3194512A
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US3216455A
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US3212515A
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US3270760A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-04-27 | 1973-10-27 | 1974-04-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-04-27 | 1977-10-27 | 1978-04-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-04-27 | 1981-10-27 | 1982-04-28 | $7700.00 | Window Closed / Lapsed |