US2979305A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Turbine with funnel drive vanes
Assignee: Individual
•
Filing: 1957-05-31
•
Granted: 1961-04-11
•
Expires: 1977-05-31
Abstract
No abstract record available.
Inventors
- 👤 Kwiatek Stanislaw
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:45
CPC Classifications
F; F02; F02C; F02C3/00; F02C3/04; F02C3/10; F02C3/103; F01; F01D; F01D1/00; F01D1/02; F01D1/026
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US754447A
Cited
US781940A
Cited
US876710A
Cited
US981021A
Cited
US924309A
Cited
US1896809A
Cited
GB399224A
Cited
US2619797A
Cited
US2625790A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-04-10 | 1964-10-10 | 1965-04-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-04-10 | 1968-10-10 | 1969-04-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-04-10 | 1972-10-10 | 1973-04-11 | $7700.00 | Window Closed / Lapsed |