US2701530A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multistage centrifugal pump
Assignee: Individual
•
Filing: 1950-09-05
•
Granted: 1955-02-08
•
Expires: 1970-09-05
Abstract
No abstract record available.
Inventors
- 👤 Schellerer Josef
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 10:23
CPC Classifications
F; F01; F01D; F01D1/00; F01D1/02; F01D1/10
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US765935A
Cited
US1010158A
Cited
US1114230A
Cited
US1482376A
Cited
US1782469A
Cited
US1885093A
Cited
FR766853A
Cited
US2037775A
Cited
US2223592A
Cited
US2391811A
Cited
CH248601A
Cited
US2504140A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-02-07 | 1958-08-09 | 1959-02-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-02-07 | 1962-08-09 | 1963-02-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-02-07 | 1966-08-09 | 1967-02-08 | $7700.00 | Window Closed / Lapsed |