Patent US3522703A successfully refreshed from Google Patents.
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 09:21
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
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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 |