US2721026A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Blade seal for rotary pump
Assignee: General Electric Co
•
Filing: 1951-12-27
•
Granted: 1955-10-18
•
Expires: 1971-12-27
Abstract
No abstract record available.
Inventors
- 👤 Raymond L Dills
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:21
CPC Classifications
F; F25; F25B; F25B31/00; F25B31/02; F25B31/026
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1884702A
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US2215512A
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US2200222A
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US2174233A
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US2395065A
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US2373909A
Cited
US2458018A
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US2612311A
Cited
US2488942A
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US2644635A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-10-17 | 1959-04-18 | 1959-10-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-10-17 | 1963-04-18 | 1963-10-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-10-17 | 1967-04-18 | 1967-10-18 | $7700.00 | Window Closed / Lapsed |