Patent US2282149A successfully refreshed from Google Patents.
Patent US2907310A successfully refreshed from Google Patents.
US2907310A
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US
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Dampening fluid
Assignee: Northrop Grumman Space and Mission Systems Corp
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Filing: 1955-09-01
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Granted: 1959-10-06
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Expires: 1975-09-01
Abstract
No abstract record available.
Inventors
- 👤 William S Gleeson
- 👤 Edward W Stevens
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:56
CPC Classifications
F; F01; F01L; F01L1/00; F01L1/20; F01L1/22; F01L1/24; F01L1/245; F01L1/25; F01L1/252
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2570854A
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US2684336A
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US2698837A
Cited
US2642395A
Cited
US2742031A
Cited
US2742030A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-10-05 | 1963-04-06 | 1963-10-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-10-05 | 1967-04-06 | 1967-10-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-10-05 | 1971-04-06 | 1971-10-06 | $7700.00 | Window Closed / Lapsed |