US2889107A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid rotor construction
Assignee: Stalker Corp
•
Filing: 1955-01-03
•
Granted: 1959-06-02
•
Expires: 1975-01-03
Abstract
No abstract record available.
Inventors
- 👤 Edward A Stalker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:55
CPC Classifications
F; F01; F01D; F01D5/00; F01D5/02; F01D5/04; F01D5/043; F01D5/048; F04; F04D; F04D29/00; F04D29/26; F04D29/28; F04D29/284; Y; Y10; Y10S; Y10S416/00; Y10S416/50
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US906400A
Cited
GB492801A
Cited
US2540991A
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US2609141A
Cited
US2657008A
Cited
US2622843A
Cited
US2649243A
Cited
US2650017A
Cited
US2743053A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-06-01 | 1962-12-01 | 1963-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-06-01 | 1966-12-01 | 1967-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-06-01 | 1970-12-01 | 1971-06-02 | $7700.00 | Window Closed / Lapsed |