US2804556A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sealed stator in submersible motors
Assignee: Amag Hilpert Pegnitzhutte A G
•
Filing: 1953-12-01
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Granted: 1957-08-27
•
Expires: 1973-12-01
Abstract
No abstract record available.
Inventors
- 👤 Schanz August
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:38
CPC Classifications
H; H02; H02K; H02K5/00; H02K5/04; H02K5/12; H02K5/128; H02K5/1285
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US874084A
Cited
US1405959A
Cited
US1425308A
Cited
CH107078A
Cited
GB421857A
Cited
GB494601A
Cited
US2568548A
Cited
US2485408A
Cited
US2654848A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-08-26 | 1961-02-25 | 1961-08-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-08-26 | 1965-02-25 | 1965-08-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-08-26 | 1969-02-25 | 1969-08-27 | $7700.00 | Window Closed / Lapsed |