US3431858A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pumping system with inertia stabilization
Assignee: Control Data Corp
•
Filing: 1967-09-11
•
Granted: 1969-03-11
•
Expires: 1987-09-11
Abstract
No abstract record available.
Inventors
- 👤 Richard G Lynn Sr
- 👤 James R Machulda
- 👤 John L Hill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 11:31
CPC Classifications
F; F04; F04D; F04D15/00; F04D15/0066
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3123005A
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US2253859A
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US2944488A
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US2950682A
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US2966120A
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US3021789A
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US3097606A
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US3213795A
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US3294024A
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US3393642A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-03-10 | 1972-09-09 | 1973-03-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-03-10 | 1976-09-09 | 1977-03-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-03-10 | 1980-09-09 | 1981-03-11 | $7700.00 | Window Closed / Lapsed |