US2802619A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Axial flow rotors for fluid machines
Assignee: Stalker Development Co
•
Filing: 1950-09-16
•
Granted: 1957-08-13
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Expires: 1970-09-16
Abstract
No abstract record available.
Inventors
- 👤 Daniel J Clarke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:55
CPC Classifications
F; F01; F01D; F01D5/00; F01D5/12; F01D5/14; F01D5/18
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1363692A
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US1404298A
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US2347034A
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CH238026A
Cited
GB602530A
Cited
US2604298A
Cited
US2501038A
Cited
US2649243A
Cited
US2568726A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-08-12 | 1961-02-11 | 1961-08-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-08-12 | 1965-02-11 | 1965-08-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-08-12 | 1969-02-11 | 1969-08-13 | $7700.00 | Window Closed / Lapsed |