US2937847A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bladed axial flow rotors
Assignee: Stalker Corp
•
Filing: 1954-06-24
•
Granted: 1960-05-24
•
Expires: 1974-06-24
Abstract
No abstract record available.
Inventors
- 👤 Edward A Stalker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 18:26
CPC Classifications
F; F01; F01D; F01D5/00; F01D5/02; F01D5/06; F01D5/021
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1210978A
Cited
US2604298A
Cited
FR991982A
Cited
US2678537A
Cited
CH276510A
Cited
GB702740A
Cited
CH289799A
Cited
US2801071A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-05-24 | 1963-11-23 | 1964-05-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-05-24 | 1967-11-23 | 1968-05-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-05-24 | 1971-11-23 | 1972-05-24 | $7700.00 | Window Closed / Lapsed |