US2925783A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Centrifugal pump assembly
Assignee: March Manufacturing Co
•
Filing: 1958-06-13
•
Granted: 1960-02-23
•
Expires: 1978-06-13
Abstract
No abstract record available.
Inventors
- 👤 Frederick N Zimmermann
- 👤 Willy E Zimmermann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 05:08
CPC Classifications
F; F04; F04D; F04D29/00; F04D29/40; F04D29/42; F04D29/426
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2047330A
Cited
US2441708A
Cited
US2688930A
Cited
US2779611A
Cited
US2784673A
Cited
FR1092549A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-02-22 | 1963-08-24 | 1964-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-02-22 | 1967-08-24 | 1968-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-02-22 | 1971-08-24 | 1972-02-23 | $7700.00 | Window Closed / Lapsed |