Patent CA1229993A successfully refreshed from Google Patents.
Patent US3551714A successfully refreshed from Google Patents.
US3551714A
Expired / Lapsed
US
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Submersible motor and bearing arrangement therefor
Assignee: Centrilift Hughes Inc
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Filing: 1968-12-30
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Granted: 1970-12-29
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Expires: 1988-12-30
Abstract
No abstract record available.
Inventors
- 👤 Clinton A Boyd
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 16:21
CPC Classifications
F; F04; F04D; F04D29/00; F04D29/04; F04D29/046; F04D29/047; F04D29/0465; F16; F16C; F16C33/00; F16C33/02; F16C33/04; F16C33/043; H; H02; H02K; H02K5/00; H02K5/04; H02K5/12; H02K5/132; H02K5/16; H02K5/167
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-12-28 | 1974-06-29 | 1974-12-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-12-28 | 1978-06-29 | 1978-12-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-12-28 | 1982-06-29 | 1982-12-29 | $7700.00 | Window Closed / Lapsed |