US2931307A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Enclosed rotor construction for motor pump unit
Assignee: Gorman Rupp Industries Inc
•
Filing: 1957-12-04
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Granted: 1960-04-05
•
Expires: 1977-12-04
Abstract
No abstract record available.
Inventors
- 👤 Edward M Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:18
CPC Classifications
H; H02; H02K; H02K5/00; H02K5/04; H02K5/12; H02K5/128
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2517233A
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US2649048A
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US2740058A
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US2827855A
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US2758226A
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US2766695A
Cited
GB782533A
Cited
US2796835A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-04-05 | 1963-10-05 | 1964-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-04-05 | 1967-10-05 | 1968-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-04-05 | 1971-10-05 | 1972-04-05 | $7700.00 | Window Closed / Lapsed |