US3522703A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multistage tangential turbine
Assignee: Individual
•
Filing: 1968-01-02
•
Granted: 1970-08-04
•
Expires: 1988-01-02
Abstract
No abstract record available.
Inventors
- 👤 Ferenc Toth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 05:39
CPC Classifications
F; F01; F01D; F01D1/00; F02; F02C; F02C5/00; F02C5/02; F05; F05D; F05D2250/00; F05D2250/30; F05D2250/32; F05D2250/322
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US749739A
Cited
US800684A
Cited
US960260A
Cited
US1200133A
Cited
FR692042A
Cited
FR1010935A
Cited
CH294831A
Cited
US2786647A
Cited
US2717491A
Cited
FR1164866A
Cited
DE1189319B
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-08-03 | 1974-02-02 | 1974-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-08-03 | 1978-02-02 | 1978-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-08-03 | 1982-02-02 | 1982-08-04 | $7700.00 | Window Closed / Lapsed |