US2960995A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Jet pipe relay for operation submerged in oil with minimum inertia and frictional resistance
Assignee: North American Manufacturing Co
•
Filing: 1956-05-01
•
Granted: 1960-11-22
•
Expires: 1976-05-01
Abstract
No abstract record available.
Inventors
- 👤 Clark E Hague
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 07:54
CPC Classifications
F; F15; F15C; F15C3/00; F15C3/10; F15C3/12; Y; Y10; Y10T; Y10T137/00; Y10T137/2278; Y10T137/2322
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US825998A
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US2130109A
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US2107971A
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DE667816C
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US2350808A
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US2331817A
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US2400658A
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US2488041A
Cited
FR1041914A
Cited
US2742919A
Cited
US2848041A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-11-22 | 1964-05-23 | 1964-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-11-22 | 1968-05-23 | 1968-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-11-22 | 1972-05-23 | 1972-11-22 | $7700.00 | Window Closed / Lapsed |